International Journal of Pressure Vessels and Piping最新文献_第3页

Effect of post-weld heat treatment on microstructure and mechanical properties of induction roll welded joint for A283GRC steel and 5052 aluminum alloy 焊后热处理对 A283GRC 钢和 5052 铝合金感应辊焊接头微观结构和机械性能的影响

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-10-05 DOI: 10.1016/j.ijpvp.2024.105337

Kai Gao , Yifan Liu , Jingfeng Gong , Kai Ye , Jiahao Gong , Xinglei Dai , Jiawen Du , Pei Li

Steel-aluminum transition joints are commonly produced through explosive welding and friction welding techniques, serving to link aluminum pressure vessels with steel pipes within cold boxes in air separation unit. This study investigates the impact of post-weld heat treatment (PWHT) on the microstructure and mechanical properties of steel-aluminum transition joints created via induction roll welded (IRW), utilizing A283GRC steel and 5052 aluminum alloy as substrates. The findings suggest that the types of intermetallic compounds (IMCs) in IRW joints remain unchanged before and after heat treatment. The thickness of interfacial IMCs increases with higher annealing temperature and longer annealing time, with a faster growth rate at higher annealing temperatures. After PWHT, the grain size near the interface of the joint on the steel side decreased, with the most significant decrease observed when annealed at 300 °C for 2 h. While cracks in the interface zone gradually diminish or disappear with PWHT, excessive heat treatment temperature or duration may result in new transverse cracks. At an annealing temperature of 200 °C, there is limited growth range for IMCs and noticeable repair effect on cracks within the interface region. When annealed at 300 °C and 400 °C, there is a decrease in joint hardness compared to before heat treatment levels, and this decreasing rate accelerates with higher annealing temperature and longer duration. Following annealing at 300 °C for 2 h, the shear strength of the sample reached 70.52 MPa, which is 32 % higher than that before heat treatment. Overall findings suggest that the annealing temperature exerts a more pronounced impact on the mechanical properties of joints in comparison to the annealing duration across the investigated time and temperature ranges. The fracture mode exhibited by the samples before and after heat treatment in IRW is characterized by a mixed fracture mode. However, the predominant fracture mode observed without heat treatment is brittle fracture, whereas after heat treatment, ductile fracture becomes the primary mode of fracture.

钢铝过渡接头通常通过爆炸焊接和摩擦焊接技术制造，用于连接空分装置冷箱内的铝压力容器和钢管。本研究以 A283GRC 钢和 5052 铝合金为基材，探讨了焊后热处理（PWHT）对通过感应辊焊（IRW）产生的钢铝过渡接头的微观结构和机械性能的影响。研究结果表明，IRW 接头中金属间化合物 (IMC) 的类型在热处理前后保持不变。界面 IMC 的厚度随着退火温度的升高和退火时间的延长而增加，退火温度越高，IMC 的增长速度越快。虽然界面区的裂纹会随着 PWHT 而逐渐减少或消失，但过高的热处理温度或过长的热处理时间可能会导致新的横向裂纹。退火温度为 200 ℃ 时，IMC 的生长范围有限，对界面区的裂纹有明显的修复作用。在 300 ℃ 和 400 ℃ 下退火时，接头硬度与热处理前相比有所下降，而且退火温度越高、持续时间越长，硬度下降的速度越快。在 300 °C 下退火 2 小时后，样品的剪切强度达到 70.52 MPa，比热处理前提高了 32%。总体研究结果表明，在所研究的时间和温度范围内，退火温度对接头机械性能的影响比退火持续时间更明显。样品在 IRW 热处理前后的断裂模式表现为混合断裂模式。然而，在未进行热处理时观察到的主要断裂模式是脆性断裂，而在热处理后，韧性断裂成为主要的断裂模式。

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引用次数: 0

Research on magnetic flux leakage testing of pipelines by finite element simulation combined with artificial neural network 有限元模拟结合人工神经网络的管道漏磁测试研究

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-10-05 DOI: 10.1016/j.ijpvp.2024.105338

Yingqi Li, Chao Sun

Magnetic flux leakage (MFL) testing technology is widely employed in non-destructive testing of pipelines, and the analysis of leakage signals plays a crucial role in assessing pipelinea safety. This paper introduces a novel approach for MFL testing, which combines finite element simulation with artificial neural networks. First, a finite element model for MFL testing of defects is established, the influence of magnetization states on MFL signals is discussed, and the variation of signal extremum with magnetization intensity is analyzed. Next, suitable MFL signal features are selected to focus on the relationship between defect types, defect sizes, and these features. Finally, a kernel extreme learning machine (KELM) predictive model is developed to classify defect types and predict defect sizes. The results indicate that as magnetization intensity increases, the magnetization process of the pipeline can be divided into a nonlinear growth phase and a linear phase, with MFL signal extremum rapidly increasing and then gradually growing linearly. Different geometric features of defects correspond to distinct distributions of MFL signals, effectively reflecting variations in defect types and sizes. Compared to traditional ELM models, the KELM model achieves higher prediction accuracy and stable performance, with the radial basis kernel function significantly enhancing the generalization and predictive capabilities of the neural network.

磁通量泄漏（MFL）测试技术被广泛应用于管道的无损检测，而泄漏信号的分析在评估管道安全方面起着至关重要的作用。本文介绍了一种结合有限元模拟和人工神经网络的新型 MFL 测试方法。首先，建立了缺陷 MFL 测试的有限元模型，讨论了磁化状态对 MFL 信号的影响，分析了信号极值随磁化强度的变化。接着，选择合适的 MFL 信号特征，重点研究缺陷类型、缺陷大小与这些特征之间的关系。最后，开发了一个核极端学习机（KELM）预测模型来分类缺陷类型和预测缺陷大小。结果表明，随着磁化强度的增加，管道的磁化过程可分为非线性增长阶段和线性阶段，MFL 信号极值迅速增加，然后逐渐线性增长。不同的缺陷几何特征对应不同的 MFL 信号分布，有效反映了缺陷类型和尺寸的变化。与传统的 ELM 模型相比，KELM 模型的预测精度更高、性能更稳定，径向基核函数显著增强了神经网络的泛化和预测能力。

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引用次数: 0

Dynamic analysis of whipping behavior induced by the circumferential fracture of high energy pipes considering fluid-structure interaction effect 考虑流体与结构相互作用效应的高能管道周向断裂诱发的鞭打行为动态分析

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-10-04 DOI: 10.1016/j.ijpvp.2024.105336

Yuhan Wang , Jincheng Hu , Xiaochuan Wang , Shijing Wu

To analyze the dynamic characteristics of whipping behavior induced by the circumferential fracture of high energy pipes, a numerical model of the piping system was presented based on the bidirectional fluid-structure interaction method. The reliability of this model was validated against experimental results. Furthermore, the dynamic characteristics of whipping behavior were studied, as well as the effects of some main parameters. The numerical results suggest that the entire whipping behavior can be divided into four stages: free-whipping stage Ⅰ, free-whipping stage Ⅱ, collision stage and periodic stage. The dynamic response of whipping behavior is different in the four stages and is dominated by a single mode with a frequency of 29.35 Hz under the combined action of the thrust force and U-bolt restraints. The increase of inlet flow rate causes the enhancement of thrust force and thus makes its dynamic response more complicated. The parameter analysis shows that the whipping behavior can be suppressed by choosing the small initial clearance, setting the suitable gap and increasing the straight segment length of U-bolt restraints. The above results are helpful to understand the dynamic characteristics of whipping behavior and provide valuable suggestions for the optimization of the protection measures.

为了分析高能管道周向断裂诱发的鞭打行为的动态特性，基于双向流固耦合方法提出了管道系统的数值模型。实验结果验证了该模型的可靠性。此外，还研究了鞭打行为的动态特征以及一些主要参数的影响。数值结果表明，整个鞭打行为可分为四个阶段：自由鞭打阶段Ⅰ、自由鞭打阶段Ⅱ、碰撞阶段和周期阶段。四个阶段的鞭打行为动态响应不同，在推力和 U 形螺栓约束的共同作用下，以频率为 29.35 Hz 的单一模式为主。入口流速的增加会导致推力的增强，从而使其动态响应变得更加复杂。参数分析表明，通过选择较小的初始间隙、设置合适的间隙和增加 U 型螺栓约束的直线段长度，可抑制鞭打行为。上述结果有助于了解鞭打行为的动态特性，并为优化保护措施提供了宝贵建议。

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引用次数: 0

A shell equilibrium modeling for stress distribution of offshore tubular joints 海上管接头应力分布的壳体平衡模型

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-29 DOI: 10.1016/j.ijpvp.2024.105334

Yongkang Zheng , Zhihao Chen , Hongliang Qian , Ping Wang , Zhenggang Cao

In this study, an optimal shell element modeling approach for tubular joints in ocean engineering was developed utilizing a structural stress analysis. Setting the weld seam thickness of the shell element model to the weld throat size ensured equivalent stiffness between the shell and solid element models. The accuracy of the proposed shell element model was verified by comparing the hot spot stress obtained from the axial loading tests of the three-plane Y-joints carry out by Dalian University of Technology (DUT). The influence of the ratio of chord outer diameter to wall thickness (γ) and the ratio of brace outer diameter to chord outer diameter (β) on stress concentration of K-joints was investigated to evaluate the fatigue performance. The results revealed that for K-joints where the chord is in tension, the β should be as close to 0.5 as possible and should minimize the γ to reduce the stress concentration. For the brace of K-joints under tension, as β and γ increases, the location of fatigue crack initiation transitions from the lower weld toe to the upper weld toe. The β should be avoided around 0.5 and the γ should be as small as possible to minimize the stress concentration.

本研究利用结构应力分析，为海洋工程中的管状接头开发了一种最佳壳体元素建模方法。将壳元素模型的焊缝厚度设定为焊缝喉部尺寸，确保了壳元素模型和实体元素模型之间的等效刚度。通过比较大连理工大学（DUT）三平面 Y 型接头轴向加载试验获得的热点应力，验证了所提出的壳体元素模型的准确性。研究了弦外径与壁厚之比（γ）和支撑外径与弦外径之比（β）对 K 型接头应力集中的影响，以评估其疲劳性能。结果表明，对于弦处于拉伸状态的 K 型关节，β 应尽可能接近 0.5，并应尽量减小 γ 以减少应力集中。对于拉伸状态下的 K 型接头支撑，随着 β 和 γ 的增大，疲劳裂纹的起始位置会从下焊趾过渡到上焊趾。β 应避免在 0.5 左右，γ 应尽可能小，以尽量减少应力集中。

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引用次数: 0

Experimental evaluation of multiple-component residual stress distribution in a dissimilar metal repair joint of ferritic/martensitic steel using the asymmetric-cut and the symmetric-cut contour method 使用非对称切割和对称切割轮廓法对铁素体钢/马氏体钢异种金属修复接头中的多组分残余应力分布进行实验评估

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-26 DOI: 10.1016/j.ijpvp.2024.105333

Chuan Liu , Hui Xiao , Jialing Yan , Lianju Yan , Long Wang

A thick multi-pass butt-welded ferritic/martensitic steel (P91) joint is prepared and the local region of the weld is repaired with an ENiCrFe-3 nickel-based alloy using the manual metal arc welding method. The repair weld including part of the base metal is then subjected to ultrasonic impact treatment (UIT). A three-cut contour method (CM), including two asymmetric cuts and one symmetric cut, is developed in the present study to obtain the two-dimensional (2D) residual stress distributions at different locations, and the stress release after multiple cuts is considered to get the original stress distribution before cuts. The measurement procedure is introduced in detail. The longitudinal stresses in the repair weld and the initial weld of the P91 steel joint, as well as the transverse stress at the weld center, are finally obtained. The effects of the dissimilar metal repair weld at the local region on the longitudinal and transverse welding residual stresses are investigated. In addition, the applicability of UIT to mitigate the surface stress in nickel-based alloy repair weld is analyzed. The results show that the transverse and longitudinal stresses in the nickel-based alloy repair weld are both tensile stresses, the maximum longitudinal stress is close to the yield strength of the B91 weld metal and occurs in the heat-affected zone of the repair weld located in the initial weld. Repair welding causes the internal transverse compressive stress region to be narrower than in the initial weld. UIT can be used to introduce compressive stress to the surface layer of the nickel-based alloy repair weld.

制备了厚的多道对焊铁素体/马氏体钢（P91）接头，并采用手工金属弧焊方法用 ENiCrFe-3 镍基合金修复了焊缝的局部区域。然后对包括部分母材在内的修复焊缝进行超声波冲击处理 (UIT)。本研究开发了一种三切割轮廓法（CM），包括两次非对称切割和一次对称切割，以获得不同位置的二维（2D）残余应力分布，并考虑多次切割后的应力释放，以获得切割前的原始应力分布。详细介绍了测量过程。最终得到了 P91 钢接头修复焊缝和初始焊缝的纵向应力以及焊缝中心的横向应力。研究了局部区域的异种金属修复焊缝对纵向和横向焊接残余应力的影响。此外，还分析了 UIT 在减轻镍基合金修补焊缝表面应力方面的适用性。结果表明，镍基合金修补焊缝中的横向和纵向应力均为拉应力，最大纵向应力接近 B91 焊接金属的屈服强度，发生在位于初始焊缝的修补焊缝热影响区。修补焊接导致内部横向压应力区域比初始焊缝更窄。UIT 可用于在镍基合金修补焊缝的表层引入压应力。

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引用次数: 0

Prediction of the residual lifetime of bitumen coatings on urban gas pipelines from the change in their mechanical characteristics during thermal-oxidative aging 从热氧化老化过程中沥青涂层机械特性的变化预测城市燃气管道沥青涂层的剩余寿命

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-25 DOI: 10.1016/j.ijpvp.2024.105332

Alexander Kren , Alexander Machikhin , Mikhail Delendik

Residual life of bitumen insulation is an important parameter of urban gas pipelines. Its fast and reliable estimation is necessary for timely health monitoring and coating restoration. In this study, we propose to define lifespan of bitumen insulation in situ from the mechanical characteristics measured during its thermal-oxidative aging. For evaluation of elastic and viscous properties, micro-impact dynamic indentation was applied. We determined the values of activation energy under thermal destruction and the dependence of transient electrical resistance on the critical values of coating's mechanical properties. Obtained experimental data foster real-time estimation of service time of insulation without coating removal.

沥青保温层的剩余寿命是城市燃气管道的一个重要参数。对其进行快速可靠的估算对于及时监测健康状况和修复涂层非常必要。在这项研究中，我们建议根据热氧化老化过程中测得的机械特性来确定沥青保温层的原位寿命。为了评估弹性和粘性特性，我们采用了微冲击动态压痕法。我们确定了热破坏下的活化能值以及瞬态电阻对涂层机械特性临界值的依赖性。获得的实验数据有助于在不去除涂层的情况下实时估算绝缘层的使用时间。

引用次数: 0

Weight function and stress intensity factors for external circumferential surface cracks with high aspect ratio in cylinders 圆柱体高纵横比外圆周表面裂缝的权重函数和应力强度因子

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-21 DOI: 10.1016/j.ijpvp.2024.105331

Kuilin Yuan , Kun Dong , Qitian Fang , Chunbo Zhen

Surface cracks with crack aspect ratio greater than unity have been detected in pipes and cylindrical vessels vulnerable to fatigue and stress corrosion cracking. Accurate solutions of stress intensity factors are prerequisite for predicting the crack growth behaviour of cracked cylinders. In this study, a weight function for the calculation of stress intensity factors for external circumferential surface cracks with high aspect ratio in hollow cylinders is developed. First, three-dimensional finite element models for the surface cracks with aspect ratios 1.0 ≤ a/c ≤ 2.0, ratios of crack depth to thickness 0.1 ≤ a/T ≤ 0.8 and ratios of thickness to inner radius 0.02 ≤ T/R_i ≤ 0.2 are developed and validated. An efficient numerical integration scheme using isotropic elements and the Gauss-Legendre quadrature is suggested for evaluating the integral involving weight function. The unknown weight function coefficients can be then determined by the stress intensity factors obtained from finite element models. Comprehensive comparisons between the results predicted by the derived weight function and finite element analysis are performed for various one-dimensional and two-dimensional stress distributions, indicating a fairly good agreement. The maximum relative errors with respect to finite element solutions are within 8 % for both the surface and deepest points. The present results can complement the database of stress intensity factors and weight function previously developed for external circumferential surface cracks with low aspect ratios 0.2 ≤ a/c ≤ 1.0 in cylinders.

在易受疲劳和应力腐蚀开裂影响的管道和圆柱形容器中发现了裂纹纵横比大于 1 的表面裂纹。应力强度因子的精确求解是预测开裂圆柱体裂纹生长行为的先决条件。本研究开发了一种权重函数，用于计算空心圆柱体高纵横比外圆周表面裂纹的应力强度因子。首先，建立并验证了纵横比为 1.0 ≤ a/c ≤ 2.0、裂纹深度与厚度之比为 0.1 ≤ a/T ≤ 0.8、厚度与内半径之比为 0.02 ≤ T/Ri ≤ 0.2 的表面裂纹的三维有限元模型。提出了一种使用各向同性元素和高斯-列根德二次方程的高效数值积分方案，用于评估涉及权重函数的积分。然后，可以通过从有限元模型中获得的应力强度因子来确定未知的权函数系数。针对各种一维和二维应力分布，对推导的权重函数和有限元分析预测的结果进行了综合比较，结果表明两者的一致性相当好。对于表面点和最深点，与有限元解的最大相对误差都在 8% 以内。本结果可以补充之前针对圆柱体中长宽比 0.2 ≤ a/c ≤ 1.0 的外圆周表面裂缝开发的应力强度因子和权重函数数据库。

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引用次数: 0

Fatigue life predictions for welded boiler water walls 焊接锅炉水墙的疲劳寿命预测

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-21 DOI: 10.1016/j.ijpvp.2024.105328

Suvan Dev Choudhury, Waris Nawaz Khan, Leijun Li

Boiler water walls experience in-phase thermo-mechanical loading during start-ups and shut-downs, leading to low cycle fatigue (LCF) failure. This study aims at establishing an FEA-based failure prediction method for estimating the fatigue performance and service life of the welded water walls. The developed model is validated for predicting failure in the defect-free uniaxial fatigue specimens. Stress-mechanical strain hysteresis loops and accumulated inelastic strain energy density per cycle parameters are extracted from fatigue tests at 0.4%, 0.6%, and 0.7% strains. A combination of cyclic plasticity and continuous damage mechanics (CDM) theory is utilized to predict fatigue crack initiation sites and estimate the specimen fatigue life. Accumulated damage has been calculated for the life cycle of each specimen. FEA model predicted failure and service life agrees well with the experimental results. The established failure analysis parameters are then transferred from the specimen level to the water wall component level, thereby estimating the service life of defect-free water walls at 750 cycles.

锅炉水墙在启动和停机过程中会承受同相热机械载荷，从而导致低循环疲劳（LCF）失效。本研究旨在建立一种基于有限元分析的失效预测方法，用于估算焊接水墙的疲劳性能和使用寿命。所开发的模型对预测无缺陷单轴疲劳试样的失效进行了验证。从 0.4%、0.6% 和 0.7% 应变的疲劳试验中提取了应力-机械应变滞后环和每周期累积非弹性应变能量密度参数。循环塑性和连续损伤力学（CDM）理论相结合，用于预测疲劳裂纹起始点和估算试样疲劳寿命。每个试样的寿命周期都计算了累积损伤。有限元分析模型预测的失效和使用寿命与实验结果非常吻合。然后，将已建立的失效分析参数从试样层面转移到水墙组件层面，从而估算出无缺陷水墙在 750 个循环周期下的使用寿命。

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引用次数: 0

Microstructure, hardness and creep properties for P91 steel after long-term service in a ultra-supercritical power plant P91 钢在超超临界发电厂长期使用后的微观结构、硬度和蠕变特性

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-19 DOI: 10.1016/j.ijpvp.2024.105330

Xiaoxiang Sun , Chang Che , Gong Qian , Xue Wang

3 P91 pipes enduring 5∼6 × 10⁴ h service had been found in an ultra-supercritical power plant. Hardness tests, microstructure observation(OM, SEM/EBSD, TEM/EDS) and creep rupture tests were performed, and the relationship between hardness, microstructure and creep rupture strength were discussed. Results showed that 1 of the 3 pipes still featured lath martensite, and its mechanical properties complied with relevant criteria. Other 2 pipes were characteristic of a mixture of ferrite and highly recovered martensite. Their hardness and creep rupture strength experienced severe degradation. Laves phase was observed in all 3 pipes. The most distinctive feature of the 2 low hardness pipes was their coarse and intragranularly distributed M₂₃C₆. This might be caused by abnormal heat treatments which could lead to the mixed microstructure of martensite and ferrite, and this kind of microstructure would degrade fast during service. Thus the low hardness had nothing to do with the precipitation of Laves phase.

在一个超超临界发电厂中发现了 3 根 P91 管道，其使用寿命为 5 ∼ 6 × 104 h。对其进行了硬度测试、微观结构观察（OM、SEM/EBSD、TEM/EDS）和蠕变断裂测试，并讨论了硬度、微观结构和蠕变断裂强度之间的关系。结果表明，3 根钢管中的 1 根仍以板条马氏体为特征，其机械性能符合相关标准。另外两根钢管的特征是铁素体和高恢复马氏体的混合物。它们的硬度和蠕变断裂强度严重下降。在所有 3 根钢管中都观察到了拉维斯相。两根低硬度钢管的最显著特点是M23C6粗大且晶粒内分布。这可能是由于不正常的热处理导致了马氏体和铁素体的混合显微结构，而这种显微结构在使用过程中会快速退化。因此，低硬度与拉夫相的析出无关。

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引用次数: 0

Prediction of the internal corrosion rate for oil and gas pipelines and influence factor analysis with interpretable ensemble learning 石油和天然气管道内部腐蚀率预测以及可解释集合学习的影响因素分析

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping

Pub Date : 2024-09-19 DOI: 10.1016/j.ijpvp.2024.105329

Jinlong Hu

Corrosion is one of the major threats to the safety and reliability of oil and gas pipelines, making accurate prediction of corrosion rate crucial for pipeline maintenance and repairment. Traditional prediction methods often ignore more critical factors and lack interpretability, which hinders the practical application. Here, an interpretable ensemble machine learning framework is proposed, not only improving prediction performance, but also enhancing interpretability for predicting the internal corrosion rate of oil and gas pipelines. In this work, ExtraTreeRegression model has demonstrated superior prediction accuracy relative to the other five machine learning models, and the determination coefficient of the ExtraTreeRegression model achieves 0.93 after feature engineering. Then, Shapley Additive exPlanations (SHAP) values is utilized to visually interpret the model locally and globally to help account for the contributions of the input features. Furthermore, the accumulated local effect (ALE) successfully explains how the features affect the internal corrosion rate of oil and gas pipelines. By collecting corrosion data of oil and gas pipeline and performing feature engineering and data preprocessing, we construct a comprehensive and reliable prediction model with interpretability. Experimental results demonstrate that the proposed interpretable ensemble machine learning approach outperforms other models in both accuracy and interpretability, providing valuable insights for pipeline management decisions.

腐蚀是油气管道安全性和可靠性的主要威胁之一，因此准确预测腐蚀率对管道维护和修理至关重要。传统的预测方法往往忽略了更多关键因素，并且缺乏可解释性，从而阻碍了实际应用。本文提出了一种可解释的集合机器学习框架，不仅提高了预测性能，还增强了预测油气管道内部腐蚀率的可解释性。在这项工作中，ExtraTreeRegression 模型的预测精度优于其他五个机器学习模型，在特征工程之后，ExtraTreeRegression 模型的判定系数达到了 0.93。然后，利用 Shapley Additive exPlanations（SHAP）值对模型进行局部和全局的可视化解释，以帮助解释输入特征的贡献。此外，累积局部效应（ALE）成功地解释了特征如何影响油气管道的内部腐蚀率。通过收集油气管道的腐蚀数据，并进行特征工程和数据预处理，我们构建了一个全面可靠且可解释的预测模型。实验结果表明，所提出的可解释集合机器学习方法在准确性和可解释性方面都优于其他模型，为管道管理决策提供了有价值的见解。

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引用次数: 0