International Journal of Pressure Vessels and Piping最新文献

英文中文

Quantitative study on magnetic flux leakage internal detection signal of defects on the outer wall of bimetal composite pipes

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-17 DOI: 10.1016/j.ijpvp.2025.105438

Tengjiao He , Hanyu Zhong , Kexi Liao , Jiancheng Liao , Shuai Zhao , Guoxi He , Jiezhen Zhang

Bimetal composite pipes are widely used in oil and gas gathering pipelines due to their exceptional anti-corrosion and high-pressure resistance properties. However, the magnetic flux leakage (MFL) internal detection device for single-layer pipes is unsuitable for the bimetal composite pipe. It is difficult to detect the location and size of pipe defects in the outer layer. To solve the problem of poor detection performance for the bimetal composite pipe, this paper conducted a series of studies. Firstly, in this paper, the multi-layer media magnetic dipole model for bimetal composite pipes is established. Then, the influence of the thickness and permeability of the inner layer on the MFL signal of the outer wall defects is quantitatively studied. What's more, a MFL detection simulation model for bimetal composite pipes is established, and the detection rate of defects on the outer wall of bimetal composite pipes is improved by optimizing the design of the magnetization device. Finally, a defect size inversion method in the outer layer of bimetal composite pipes is proposed, which is validated by an indoor experimental test. The results indicate that compared to the case with the inner layer, the amplitude of axial and radial MFL signals raise by 74 % and 76 % respectively in the absence of an inner layer pipeline. The amplitude of the MFL signal of the outer wall defect decreases exponentially as the thickness and relative magnetic permeability of the inner layer increase. After optimizing the magnetization device, the magnetic induction intensity of the outer layer is increased by 29 %, and the detection rate of defects is increased by 37 %. The maximum error of the defect size inversion model is 6.4 %, which meets the requirements of engineering applications.

{"title":"Quantitative study on magnetic flux leakage internal detection signal of defects on the outer wall of bimetal composite pipes","authors":"Tengjiao He , Hanyu Zhong , Kexi Liao , Jiancheng Liao , Shuai Zhao , Guoxi He , Jiezhen Zhang","doi":"10.1016/j.ijpvp.2025.105438","DOIUrl":"10.1016/j.ijpvp.2025.105438","url":null,"abstract":"<div><div>Bimetal composite pipes are widely used in oil and gas gathering pipelines due to their exceptional anti-corrosion and high-pressure resistance properties. However, the magnetic flux leakage (MFL) internal detection device for single-layer pipes is unsuitable for the bimetal composite pipe. It is difficult to detect the location and size of pipe defects in the outer layer. To solve the problem of poor detection performance for the bimetal composite pipe, this paper conducted a series of studies. Firstly, in this paper, the multi-layer media magnetic dipole model for bimetal composite pipes is established. Then, the influence of the thickness and permeability of the inner layer on the MFL signal of the outer wall defects is quantitatively studied. What's more, a MFL detection simulation model for bimetal composite pipes is established, and the detection rate of defects on the outer wall of bimetal composite pipes is improved by optimizing the design of the magnetization device. Finally, a defect size inversion method in the outer layer of bimetal composite pipes is proposed, which is validated by an indoor experimental test. The results indicate that compared to the case with the inner layer, the amplitude of axial and radial MFL signals raise by 74 % and 76 % respectively in the absence of an inner layer pipeline. The amplitude of the MFL signal of the outer wall defect decreases exponentially as the thickness and relative magnetic permeability of the inner layer increase. After optimizing the magnetization device, the magnetic induction intensity of the outer layer is increased by 29 %, and the detection rate of defects is increased by 37 %. The maximum error of the defect size inversion model is 6.4 %, which meets the requirements of engineering applications.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105438"},"PeriodicalIF":3.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing the butt-weld process of pipes based on the inherent strain approach

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-17 DOI: 10.1016/j.ijpvp.2025.105439

Mohammad Jafari Najafi, Amir Khosravifard, Ali Nayebi

Welded parts often suffer from distortion and residual stresses, leading to assembly inaccuracies and increased costs. To enhance the quality of welded structures, it is essential to predict and mitigate these issues. Traditionally, time-consuming thermo-elastoplastic (TEP) analyses are used to estimate welding stresses and distortions. In the present study, the theory of inherent strain and the elastic finite element method have been employed for accurate and rapid prediction of distortion and residual stresses in butt-welded pipes. Furthermore, to improve the overall weld quality, the genetic algorithm is used to optimize the main arc welding parameters such as welding power and the ratio of input heat to pipe thickness and the number of intermittent welding sections. The accuracy of the analyses is validated by comparing the simulation results with the FEM and experimental results of [1]. The optimization of the welding process was able to reduce the residual stress and deformation by 5 % and 9 %, respectively. The inherent strain method has been shown to reduce the computational cost of the analyses by more than 95 %, compared to the conventional TEP analysis, while preserving an acceptable accuracy in terms of the predicted residual stresses and deformations.

{"title":"Optimizing the butt-weld process of pipes based on the inherent strain approach","authors":"Mohammad Jafari Najafi, Amir Khosravifard, Ali Nayebi","doi":"10.1016/j.ijpvp.2025.105439","DOIUrl":"10.1016/j.ijpvp.2025.105439","url":null,"abstract":"<div><div>Welded parts often suffer from distortion and residual stresses, leading to assembly inaccuracies and increased costs. To enhance the quality of welded structures, it is essential to predict and mitigate these issues. Traditionally, time-consuming thermo-elastoplastic (TEP) analyses are used to estimate welding stresses and distortions. In the present study, the theory of inherent strain and the elastic finite element method have been employed for accurate and rapid prediction of distortion and residual stresses in butt-welded pipes. Furthermore, to improve the overall weld quality, the genetic algorithm is used to optimize the main arc welding parameters such as welding power and the ratio of input heat to pipe thickness and the number of intermittent welding sections. The accuracy of the analyses is validated by comparing the simulation results with the FEM and experimental results of [1]. The optimization of the welding process was able to reduce the residual stress and deformation by 5 % and 9 %, respectively. The inherent strain method has been shown to reduce the computational cost of the analyses by more than 95 %, compared to the conventional TEP analysis, while preserving an acceptable accuracy in terms of the predicted residual stresses and deformations.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105439"},"PeriodicalIF":3.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical assessment of bolt-tightening procedures in HDPE-steel flange assemblies

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-09 DOI: 10.1016/j.ijpvp.2024.105429

Sherif Ezzeldin , Reem Aladawi , Ahmed Shahin , Imad Barsoum

The interaction between elastic materials, particularly when joining materials with vastly different stiffness, such as high density polyethylene (HDPE) pipes and steel flanges, can significantly influence the bolt pre-load and tightness of the bolted joint. This study investigates the impact of elastic interaction on bolt pre-load in assemblies of HDPE pipes and steel flanges, using finite element analysis (FEA). The work compares the Tetra-Parametric Assembly Method (TAM) with the Elastic Interaction Coefficient Method (EICM) to enhance the bolt tightening procedure in such assemblies. FEA simulations reveal that TAM achieves more uniform load distribution and contact pressure compared to EICM. The study evaluates six different configurations, including both 8-bolt and 28-bolt models, highlighting that assemblies involving HDPE and steel exhibit higher elastic interaction and flange rotation than those with only steel components. Key findings include that TAM effectively predicts the behavior of HDPE and steel assemblies. The results indicate that larger sizes and more bolts increase elastic interaction, which is particularly pronounced in cases with HDPE and steel due to the significant stiffness contrast between the two materials. The 30-30-40 tightening rule proves effective for HDPE-to-steel flange connections, suggesting that TAM is a robust method for achieving uniform contact pressure in such assemblies. This research contributes to developing more reliable designs in industrial applications requiring HDPE and steel flange assemblies.

{"title":"Numerical assessment of bolt-tightening procedures in HDPE-steel flange assemblies","authors":"Sherif Ezzeldin , Reem Aladawi , Ahmed Shahin , Imad Barsoum","doi":"10.1016/j.ijpvp.2024.105429","DOIUrl":"10.1016/j.ijpvp.2024.105429","url":null,"abstract":"<div><div>The interaction between elastic materials, particularly when joining materials with vastly different stiffness, such as high density polyethylene (HDPE) pipes and steel flanges, can significantly influence the bolt pre-load and tightness of the bolted joint. This study investigates the impact of elastic interaction on bolt pre-load in assemblies of HDPE pipes and steel flanges, using finite element analysis (FEA). The work compares the Tetra-Parametric Assembly Method (TAM) with the Elastic Interaction Coefficient Method (EICM) to enhance the bolt tightening procedure in such assemblies. FEA simulations reveal that TAM achieves more uniform load distribution and contact pressure compared to EICM. The study evaluates six different configurations, including both 8-bolt and 28-bolt models, highlighting that assemblies involving HDPE and steel exhibit higher elastic interaction and flange rotation than those with only steel components. Key findings include that TAM effectively predicts the behavior of HDPE and steel assemblies. The results indicate that larger sizes and more bolts increase elastic interaction, which is particularly pronounced in cases with HDPE and steel due to the significant stiffness contrast between the two materials. The 30-30-40 tightening rule proves effective for HDPE-to-steel flange connections, suggesting that TAM is a robust method for achieving uniform contact pressure in such assemblies. This research contributes to developing more reliable designs in industrial applications requiring HDPE and steel flange assemblies.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105429"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Degradation behavior of a 12 % Cr tempered martensite ferritic steel after 20 years of service

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-09 DOI: 10.1016/j.ijpvp.2025.105437

Yinsheng He , SungYong Chang , BeomSin Kim , Wenyue Zheng , Zhangjian Zhou

The 12 % Cr tempered martensite ferritic steel, X20CrMoV12-1, is an important heat exchanger material for boiler tubes used in fossil-fired power plants over the past three decades. Understanding the degradation behavior of these steels after long-term service is critical, as it directly determines the safe operation and life extension of power plants. However, most investigations have focused on the properties and microstructure based on the laboratory-accelerated test, while the long-term serviced materials are rarely reported. Here, an X20CrMoV12-1 boiler tube that has been serviced as a superheater for 20 years was investigated in terms of hardness, tensile strength and creep rupture tests with corresponding microstructural analysis, aiming to understand its degradation behavior. We found the stability of microhardness and a decrease in room and high temperature tensile strength by 13 % and 17 %, respectively. Importantly, the creep rupture life of the serviced tube is reduced by ∼80 % at 600 °C, attributing to the significant decrease of dislocation density and unstable features of the coarse Laves phases. The microstructural investigation results showed no significant change in the dominant strengthening precipitates of M₂₃C₆, MX and tempered lath structures. However, microstructures of M₂₃C₆, Laves phase and substructures became unstable upon further creep at 600 °C, appearing as spheroidization, dissolution and rapid coarsening, respectively. These results suggested the overheating of the materials should be avoided during the afterward operation and life extension.

{"title":"Degradation behavior of a 12 % Cr tempered martensite ferritic steel after 20 years of service","authors":"Yinsheng He , SungYong Chang , BeomSin Kim , Wenyue Zheng , Zhangjian Zhou","doi":"10.1016/j.ijpvp.2025.105437","DOIUrl":"10.1016/j.ijpvp.2025.105437","url":null,"abstract":"<div><div>The 12 % Cr tempered martensite ferritic steel, X20CrMoV12-1, is an important heat exchanger material for boiler tubes used in fossil-fired power plants over the past three decades. Understanding the degradation behavior of these steels after long-term service is critical, as it directly determines the safe operation and life extension of power plants. However, most investigations have focused on the properties and microstructure based on the laboratory-accelerated test, while the long-term serviced materials are rarely reported. Here, an X20CrMoV12-1 boiler tube that has been serviced as a superheater for 20 years was investigated in terms of hardness, tensile strength and creep rupture tests with corresponding microstructural analysis, aiming to understand its degradation behavior. We found the stability of microhardness and a decrease in room and high temperature tensile strength by 13 % and 17 %, respectively. Importantly, the creep rupture life of the serviced tube is reduced by ∼80 % at 600 °C, attributing to the significant decrease of dislocation density and unstable features of the coarse Laves phases. The microstructural investigation results showed no significant change in the dominant strengthening precipitates of M<sub>23</sub>C<sub>6</sub>, MX and tempered lath structures. However, microstructures of M<sub>23</sub>C<sub>6</sub>, Laves phase and substructures became unstable upon further creep at 600 °C, appearing as spheroidization, dissolution and rapid coarsening, respectively. These results suggested the overheating of the materials should be avoided during the afterward operation and life extension.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105437"},"PeriodicalIF":3.0,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of parameter uncertainty upon complexity of creep behavior of P91 steel

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-09 DOI: 10.1016/j.ijpvp.2025.105436

Siyu Ren , Xinbao Liu , Lin Zhu , Ping Fan , Chaolu Song , Kai Zhang , Jie Chen , Hongtao Chen

With the Wilshire-Cano-Stewart (WCS) model and probability theory, this study dealt with the reliable prediction of creep rupture time for P91 heat-resistant steel. Firstly, the WCS model parameters were calibrated using creep test data of P91 steel, and the probability distribution functions (PDFs) of which were determined. Then, the sources of uncertainties were incorporated into the model through calibrated the PDFs by the Markov Chain Monte Carlo (MCMC) method with the Metropolis-Hastings (MH) algorithm. Consequently, the short-term and long-term creep rupture times of P91 steel were predicted using the probabilistic WCS model, respectively. The obtained results suggested that due to the complex uncertainties, the proposition of the probabilistic model offers an effective tool to predict the bounds of long-term creep rupture time for steels in particular.

引用次数: 0

Post weld heat treatment of bisalloy 80 steel: Mechanics and industry safety code compatibility

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-07 DOI: 10.1016/j.ijpvp.2025.105434

Houman Alipooramirabad , Anna Paradowska , Mark Reid , Reza Ghomashchi

The present study utilized both in-situ and ex-situ neutron diffraction to evaluate the evolution of residual strains/stresses before, during and after Post-Weld Heat Treatment (PWHT) of quenched and tempered (Q&T) Bisalloy 80 steel welded by pulsed Gas Metal Arc Welding (GMAW-P). It was found that strain/stress relaxation mainly occurred during the reheating step with a high relaxation rate and steep slope (∼67 % of strain relaxation) while linear strain relief was observed during holding (soaking) time. Most of the strain relief occurred within the temperature range of 450°C–600 °C which is believed to be due to creep strain development occurring far earlier than the component reaching the isothermal holding temperature. The ex-situ neutron diffraction measurements were similar to in-situ results confirming the applied PWHT effectively mitigated the residual stresses (the maximum longitudinal stress reduced to around 23 % of the weld metal yield strength).

The measurements were compared with existing literature data and the current fitness of safety assessment codes (BS7910 and R6). It was found that both assessment codes were conservative for both the transverse and longitudinal residual stresses in the region close to the weld toe. Furthermore, both standards may underestimate through-thickness residual stresses in the transverse direction.

{"title":"Post weld heat treatment of bisalloy 80 steel: Mechanics and industry safety code compatibility","authors":"Houman Alipooramirabad , Anna Paradowska , Mark Reid , Reza Ghomashchi","doi":"10.1016/j.ijpvp.2025.105434","DOIUrl":"10.1016/j.ijpvp.2025.105434","url":null,"abstract":"<div><div>The present study utilized both in-situ and ex-situ neutron diffraction to evaluate the evolution of residual strains/stresses before, during and after Post-Weld Heat Treatment (PWHT) of quenched and tempered (Q&T) Bisalloy 80 steel welded by pulsed Gas Metal Arc Welding (GMAW-P). It was found that strain/stress relaxation mainly occurred during the reheating step with a high relaxation rate and steep slope (∼67 % of strain relaxation) while linear strain relief was observed during holding (soaking) time. Most of the strain relief occurred within the temperature range of 450°C–600 °C which is believed to be due to creep strain development occurring far earlier than the component reaching the isothermal holding temperature. The ex-situ neutron diffraction measurements were similar to in-situ results confirming the applied PWHT effectively mitigated the residual stresses (the maximum longitudinal stress reduced to around 23 % of the weld metal yield strength).</div><div>The measurements were compared with existing literature data and the current fitness of safety assessment codes (BS7910 and R6). It was found that both assessment codes were conservative for both the transverse and longitudinal residual stresses in the region close to the weld toe. Furthermore, both standards may underestimate through-thickness residual stresses in the transverse direction.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105434"},"PeriodicalIF":3.0,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental and numerical study on the indentation response of mechanically lined pipe

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-03 DOI: 10.1016/j.ijpvp.2025.105433

Lin Yuan , Jinwei He , Chuangyi Wang , Dongdong Ren

Mechanically lined pipe (MLP) has become a low-cost and reliable solution for transporting corrosive hydrocarbons and has been used in many onshore and offshore projects. During the long-term service period, MLP is susceptible to impacts from third-party foreign objects, which can lead to severe local denting and potential failure. The indentation response of MLP to these events is still not fully understood. This paper conducted an experimental and numerical study based on lined pipe specimens fabricated using a custom hydraulic expansion facility. The lined pipes, which have finished diameters of 50 mm, are composed of a carrier made of carbon steel Grade GB45 (AISI 1045) and a liner made of copper Grade T2. Four types of indenters, including spherical, cylindrical, wedge, and square shapes, are adopted to introduce dents into the specimens. The indentation experiment was also performed on single-wall counterpart pipes. The results show that different indenters lead to distinct liner separation profiles along the specimen's length. The axial strain distribution near the dent exhibits opposite behavior between the carrier and liner tubes. In addition, the mechanical contribution of the liner and the influence of carrier pipe thickness are also discussed.

{"title":"Experimental and numerical study on the indentation response of mechanically lined pipe","authors":"Lin Yuan , Jinwei He , Chuangyi Wang , Dongdong Ren","doi":"10.1016/j.ijpvp.2025.105433","DOIUrl":"10.1016/j.ijpvp.2025.105433","url":null,"abstract":"<div><div>Mechanically lined pipe (MLP) has become a low-cost and reliable solution for transporting corrosive hydrocarbons and has been used in many onshore and offshore projects. During the long-term service period, MLP is susceptible to impacts from third-party foreign objects, which can lead to severe local denting and potential failure. The indentation response of MLP to these events is still not fully understood. This paper conducted an experimental and numerical study based on lined pipe specimens fabricated using a custom hydraulic expansion facility. The lined pipes, which have finished diameters of 50 mm, are composed of a carrier made of carbon steel Grade GB45 (AISI 1045) and a liner made of copper Grade T2. Four types of indenters, including spherical, cylindrical, wedge, and square shapes, are adopted to introduce dents into the specimens. The indentation experiment was also performed on single-wall counterpart pipes. The results show that different indenters lead to distinct liner separation profiles along the specimen's length. The axial strain distribution near the dent exhibits opposite behavior between the carrier and liner tubes. In addition, the mechanical contribution of the liner and the influence of carrier pipe thickness are also discussed.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105433"},"PeriodicalIF":3.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ratcheting behavior in SS316L concentric and eccentric reducers under cyclic axial load and constant internal pressure using DIC method

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-03 DOI: 10.1016/j.ijpvp.2025.105432

Ali Shahrjerdi, Mohammadreza Mirzabeygi

This study uses experimental and numerical methods to examine the impact of average fatigue force, amplitude fatigue force, and internal pressure on the ratcheting behavior of SS316L concentric and eccentric reducers. The material of the samples was first verified through mechanical analyses. Subsequently, the samples were fatigue tested at controlled force and room temperature (25 °C), and strain reading was done at the critical points of the samples by the digital image correlation (DIC) method. Numerical simulations with Abaqus software were conducted to validate the experimental results, confirming the experimental tests' accuracy with an acceptable margin of error. Finally, after ensuring the reliability of the numerical results, the influence of the changes in the parameters mentioned above was numerically investigated. It was observed that as these variables increase, the ratcheting strain also increases in the axial and circumferential directions, with greater sensitivity to the increase in average force and amplitude force.

{"title":"Ratcheting behavior in SS316L concentric and eccentric reducers under cyclic axial load and constant internal pressure using DIC method","authors":"Ali Shahrjerdi, Mohammadreza Mirzabeygi","doi":"10.1016/j.ijpvp.2025.105432","DOIUrl":"10.1016/j.ijpvp.2025.105432","url":null,"abstract":"<div><div>This study uses experimental and numerical methods to examine the impact of average fatigue force, amplitude fatigue force, and internal pressure on the ratcheting behavior of SS316L concentric and eccentric reducers. The material of the samples was first verified through mechanical analyses. Subsequently, the samples were fatigue tested at controlled force and room temperature (25 °C), and strain reading was done at the critical points of the samples by the digital image correlation (DIC) method. Numerical simulations with Abaqus software were conducted to validate the experimental results, confirming the experimental tests' accuracy with an acceptable margin of error. Finally, after ensuring the reliability of the numerical results, the influence of the changes in the parameters mentioned above was numerically investigated. It was observed that as these variables increase, the ratcheting strain also increases in the axial and circumferential directions, with greater sensitivity to the increase in average force and amplitude force.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105432"},"PeriodicalIF":3.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to “In-Line inspection methods and tools for oil and gas pipeline: A review” [Int. J. Pres. Ves. Pip. 214 (2025) 105409]

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-02 DOI: 10.1016/j.ijpvp.2025.105431

Jia Zhang , Mingnan Sun , Lin Qin , Dong Lin , Chang Liu , Jing Li , Chaolang Li , Shaomu Wen , Chuanjun Han

引用次数: 0

BPNN-Assisted restoration of buckling resistance of dented torispherical heads using CFRP

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2025-01-01 DOI: 10.1016/j.ijpvp.2024.105428

Ming Zhan , Hao Wang , Wenwei Wu , Haofu Hu , Jian Zhang

To mitigate the adverse effect of a dent on the load-bearing capacity of torispherical heads, this study proposes a method for repairing dented torispherical heads with carbon-fibre-reinforced polymer (CFRP). The buckling behaviours of four dented torispherical heads, two of which were repaired using the proposed method, were studied through hydrostatic experiments and finite-element analysis (FEA). Experimental buckling load values were consistent with the FEA-based numerical predictions. Subsequently, the effects of the CFRP repair area and fibre orientation on the repair efficacy were investigated through FEA. Furthermore, a backpropagation neural network (BPNN) model was trained to predict the buckling load of repaired torispherical heads. The trained BPNN model was used to analyse the interactive effects of dent depth, dent position, and number of CFRP layers on the buckling load of a repaired torispherical head. The buckling load of dented torispherical heads decreased to 73.15 % of the undented state. After repairing with CFRP, the buckling load was restored to 101.01 % of the undented state. Meanwhile, the trained BPNN model with R² of 0.9895 on the test set was found to have high prediction accuracy on the buckling load of repaired torispherical heads. Results indicated that a dent can considerably reduce the buckling load of torispherical heads. However, the load-bearing capacity of dented torispherical heads can be fully restored by using the proposed repair method. The findings of this research can act as a reference for the development of buckling resistance restoration methods for dented pressure hulls.

{"title":"BPNN-Assisted restoration of buckling resistance of dented torispherical heads using CFRP","authors":"Ming Zhan , Hao Wang , Wenwei Wu , Haofu Hu , Jian Zhang","doi":"10.1016/j.ijpvp.2024.105428","DOIUrl":"10.1016/j.ijpvp.2024.105428","url":null,"abstract":"<div><div>To mitigate the adverse effect of a dent on the load-bearing capacity of torispherical heads, this study proposes a method for repairing dented torispherical heads with carbon-fibre-reinforced polymer (CFRP). The buckling behaviours of four dented torispherical heads, two of which were repaired using the proposed method, were studied through hydrostatic experiments and finite-element analysis (FEA). Experimental buckling load values were consistent with the FEA-based numerical predictions. Subsequently, the effects of the CFRP repair area and fibre orientation on the repair efficacy were investigated through FEA. Furthermore, a backpropagation neural network (BPNN) model was trained to predict the buckling load of repaired torispherical heads. The trained BPNN model was used to analyse the interactive effects of dent depth, dent position, and number of CFRP layers on the buckling load of a repaired torispherical head. The buckling load of dented torispherical heads decreased to 73.15 % of the undented state. After repairing with CFRP, the buckling load was restored to 101.01 % of the undented state. Meanwhile, the trained BPNN model with <em>R</em><sup>2</sup> of 0.9895 on the test set was found to have high prediction accuracy on the buckling load of repaired torispherical heads. Results indicated that a dent can considerably reduce the buckling load of torispherical heads. However, the load-bearing capacity of dented torispherical heads can be fully restored by using the proposed repair method. The findings of this research can act as a reference for the development of buckling resistance restoration methods for dented pressure hulls.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105428"},"PeriodicalIF":3.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143165507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

首页上一页

下一页尾页

类型

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

数据库

全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

International Journal of Pressure Vessels and Piping

全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.

﹀