C. Lopez, Abdulrahman A. Khateeb, A. Alqahtani, P. Cissé, M. Alhajri, Dilip R. Maniar, Vishal Nayyar
– Heat exchanger leaks are common failures in gas and oil industry. However, the root causes of failure are not always obvious to identify. Therefore, utilizing advanced analysis tools such as computational fluid dynamics and finite element analysis are vital to better understand the problem. Here, we discuss a real case of a heat exchanger facing repeated leaks in an oil and gas industry. Detailed computational fluid dynamics analysis is used to determine the impact of temperature gradient on displacement of the heater flanges and gaskets. The simulated conditions include 5 steady-state and transient operating conditions. The analysis results show that thermal expansion cause loss of bolt load and further reduces gasket contact pressure. Maximum gasket scuffing due to differential radial thermal expansion could result in gasket damage over repeated thermal cycles. This finding is the most likely root cause of the repeated heater leaks. The results discuss additional potential root causes of the leaks mainly related to gasket damage due to thermal expansion behavior. The results of this work will be used for future work utilizing finite element analysis tools.
{"title":"Temperature Gradient Impact on Heat Exchanger Leaks Using CFD Analysis","authors":"C. Lopez, Abdulrahman A. Khateeb, A. Alqahtani, P. Cissé, M. Alhajri, Dilip R. Maniar, Vishal Nayyar","doi":"10.11159/htff22.192","DOIUrl":"https://doi.org/10.11159/htff22.192","url":null,"abstract":"– Heat exchanger leaks are common failures in gas and oil industry. However, the root causes of failure are not always obvious to identify. Therefore, utilizing advanced analysis tools such as computational fluid dynamics and finite element analysis are vital to better understand the problem. Here, we discuss a real case of a heat exchanger facing repeated leaks in an oil and gas industry. Detailed computational fluid dynamics analysis is used to determine the impact of temperature gradient on displacement of the heater flanges and gaskets. The simulated conditions include 5 steady-state and transient operating conditions. The analysis results show that thermal expansion cause loss of bolt load and further reduces gasket contact pressure. Maximum gasket scuffing due to differential radial thermal expansion could result in gasket damage over repeated thermal cycles. This finding is the most likely root cause of the repeated heater leaks. The results discuss additional potential root causes of the leaks mainly related to gasket damage due to thermal expansion behavior. The results of this work will be used for future work utilizing finite element analysis tools.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123143850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
- The gas hydrate formation process is divided in two main phases: the initial nucleation and the following massive growth phase. The time required for the production of a quantifiable quantity of hydrates is referred as “induction time”. Different solutions have been proposed to measure this interval; however, the low accuracy of the measure and the difficulties in evaluating it in the medium – scale lab reactors, have been not still solved. The most diffused technique consists of the visual confirmation of the production of a numerable quantity. In this work, a new alternative approach was proposed and experimentally validated. Being the formation process exothermic, the formation of the target quantity of hydrates leads to the appearance of peaks in temperature in a confined environment. These peaks cannot be exploited, due to their casual occurrence, associated to the stochastic nature of the process. Differently, the quantity of heat produced, can be directly used to calculate the moles of hydrates formed; thus, it allows to characterize the induction period for the process. In this research, the induction time was evaluated during the formation of methane and carbon dioxide hydrates, in order to detect any potential difference between the two species .
{"title":"Identification of a New Experimental Method to Measure the Induction Time for Gas Hydrates","authors":"A. Gambelli, F. Rossi","doi":"10.11159/iccpe22.121","DOIUrl":"https://doi.org/10.11159/iccpe22.121","url":null,"abstract":"- The gas hydrate formation process is divided in two main phases: the initial nucleation and the following massive growth phase. The time required for the production of a quantifiable quantity of hydrates is referred as “induction time”. Different solutions have been proposed to measure this interval; however, the low accuracy of the measure and the difficulties in evaluating it in the medium – scale lab reactors, have been not still solved. The most diffused technique consists of the visual confirmation of the production of a numerable quantity. In this work, a new alternative approach was proposed and experimentally validated. Being the formation process exothermic, the formation of the target quantity of hydrates leads to the appearance of peaks in temperature in a confined environment. These peaks cannot be exploited, due to their casual occurrence, associated to the stochastic nature of the process. Differently, the quantity of heat produced, can be directly used to calculate the moles of hydrates formed; thus, it allows to characterize the induction period for the process. In this research, the induction time was evaluated during the formation of methane and carbon dioxide hydrates, in order to detect any potential difference between the two species .","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123177749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Extended Abstract Modelling droplet evaporation is of great importance for many applications, such as inkjet printing, spray coating and combustion of fuel droplets [1, 2]. The key issues in the context of modelling droplet evaporation involve free-surface capturing [3], the phase change from liquid to vapour [4], and accurate calculations of the surface tension force [5]. Inaccurate calculations of surface tension force generate spurious currents or velocities which appear around the interface. Spurious currents destabilize the simulations and even influence the internal flow inside the droplets when studying droplets numerically [6]. In view of the issues mentioned above, we develop an improved Coupled Level Set and Volume of Fluid (i-CLSVoF) framework without explicit interface reconstruction for modelling micro-sized droplets with and without evaporation. A new surface tension force model with additional filtering steps is developed and implemented in the i-CLSVoF framework to suppress un-physical spurious velocities. Numerical benchmark cases demonstrate the excellence of the i-CLSVoF framework in reducing the un-physical spurious velocities (the un-physical spurious velocity converges to 10 −10 which is small enough to eliminate the influence of un-physical spurious velocities on the numerical stabilities). A simple yet efficient velocity-potential based approach is proposed to reconstruct a divergence-free velocity field for the advection of the free surface when the phase changes. The new approach fixes the numerical issues resulting from the evaporation-induced
{"title":"Modelling Droplet Evaporation with an Improved Coupled Level Set and Volume of Fluid (I-Clsvof) Framework","authors":"Huihuang Xia, M. Kamlah","doi":"10.11159/htff22.127","DOIUrl":"https://doi.org/10.11159/htff22.127","url":null,"abstract":"Extended Abstract Modelling droplet evaporation is of great importance for many applications, such as inkjet printing, spray coating and combustion of fuel droplets [1, 2]. The key issues in the context of modelling droplet evaporation involve free-surface capturing [3], the phase change from liquid to vapour [4], and accurate calculations of the surface tension force [5]. Inaccurate calculations of surface tension force generate spurious currents or velocities which appear around the interface. Spurious currents destabilize the simulations and even influence the internal flow inside the droplets when studying droplets numerically [6]. In view of the issues mentioned above, we develop an improved Coupled Level Set and Volume of Fluid (i-CLSVoF) framework without explicit interface reconstruction for modelling micro-sized droplets with and without evaporation. A new surface tension force model with additional filtering steps is developed and implemented in the i-CLSVoF framework to suppress un-physical spurious velocities. Numerical benchmark cases demonstrate the excellence of the i-CLSVoF framework in reducing the un-physical spurious velocities (the un-physical spurious velocity converges to 10 −10 which is small enough to eliminate the influence of un-physical spurious velocities on the numerical stabilities). A simple yet efficient velocity-potential based approach is proposed to reconstruct a divergence-free velocity field for the advection of the free surface when the phase changes. The new approach fixes the numerical issues resulting from the evaporation-induced","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121108272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Haslavsky, H. Vitoshkin, Mordehai Barak, A. Arbel
: The total energy saving effect of different types of greenhouse thermal/shade screens was determined by measuring and calculating the overall heat transfer coefficients (U-values) for single and several layers of screens. The measurements were carried out using the hot box method, and the calculations were performed according to the ISO Standard 15099. The goal was to examine different types of materials with a wide range of thermal radiation properties used for thermal screens in combination with a dehumidification system in order to improve greenhouse insulation. The experimental results were in good agreement with the calculated heat transfer coefficients. It was shown that a high amount of infra-red (IR) radiation can be blocked by the greenhouse covering material in combination with moveable thermal screens. The aluminum foil screen could be replaced by transparent screens, depending on shading requirements. The results indicated that using a single layer, the U-value was reduced by approximately 70% compared to covering material alone, while the contributions of additional screen layers containing aluminum foil strips could reduce the U-value by approximately 90%. It was shown that three screen layers are sufficient for effective insulation.
{"title":"Heat Transfer Coefficients of Layers of Greenhouse Thermal Screens","authors":"V. Haslavsky, H. Vitoshkin, Mordehai Barak, A. Arbel","doi":"10.11159/htff22.110","DOIUrl":"https://doi.org/10.11159/htff22.110","url":null,"abstract":": The total energy saving effect of different types of greenhouse thermal/shade screens was determined by measuring and calculating the overall heat transfer coefficients (U-values) for single and several layers of screens. The measurements were carried out using the hot box method, and the calculations were performed according to the ISO Standard 15099. The goal was to examine different types of materials with a wide range of thermal radiation properties used for thermal screens in combination with a dehumidification system in order to improve greenhouse insulation. The experimental results were in good agreement with the calculated heat transfer coefficients. It was shown that a high amount of infra-red (IR) radiation can be blocked by the greenhouse covering material in combination with moveable thermal screens. The aluminum foil screen could be replaced by transparent screens, depending on shading requirements. The results indicated that using a single layer, the U-value was reduced by approximately 70% compared to covering material alone, while the contributions of additional screen layers containing aluminum foil strips could reduce the U-value by approximately 90%. It was shown that three screen layers are sufficient for effective insulation.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128061038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
- The development of green corrosion inhibitors are highly demanded because of the increasing demand of green chemistry in the area of science and technology. Use of plant extracts as corrosion inhibitors has attracted significantly attention. The present study investigates corrosion inhibition of pineapple crown extract for steel 39 in 1M H₂SO 4 and 1M HCl. The weight loss method is used for inhibitor efficiency testing. The inhibition efficiency of inhibitor increases with the increases of concentration of inhibitor. Use of this inhibitor in concentration 3g/L present protection efficiency 82.88 % for steel 39 in aggressive media. The results present that pineapple crown extract is a good choice for steel 39 and environment, too.
{"title":"Pineapple Crown Extract As Green Inhibitor for Steel 39 in Acidic Media","authors":"A. Jano, Alketa Lame, E. Kokalari","doi":"10.11159/iccpe22.114","DOIUrl":"https://doi.org/10.11159/iccpe22.114","url":null,"abstract":"- The development of green corrosion inhibitors are highly demanded because of the increasing demand of green chemistry in the area of science and technology. Use of plant extracts as corrosion inhibitors has attracted significantly attention. The present study investigates corrosion inhibition of pineapple crown extract for steel 39 in 1M H₂SO 4 and 1M HCl. The weight loss method is used for inhibitor efficiency testing. The inhibition efficiency of inhibitor increases with the increases of concentration of inhibitor. Use of this inhibitor in concentration 3g/L present protection efficiency 82.88 % for steel 39 in aggressive media. The results present that pineapple crown extract is a good choice for steel 39 and environment, too.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125447553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ice accretion upon a surface is of interest in areas such as wind power, electric power transmission and vehicles in cold climate. Ice assimilation appears when humid air or water droplets impacts and freezes on a cold surface. In the study presented in this paper, droplets are deposited onto aluminium plates constructed to generate a specific contact angle between the droplet and substrate. Five contact angles are investigated and Particle Image Velocimetry (PIV) is used to analyse the internal flow. The droplets are studied along the vertical centerline and at horizontal lines at distances of 50% and 75% of the total height of the droplet. From the results it is found that a lower contact angle will increase the magnitude of the internal flow close to the edges. A larger contact angle will instead increase the magnitude of the flow in the center of the droplet. For a droplet with lower contact angle it was furthermore found that there is a triangular area inside the droplet with close to zero velocity.
{"title":"Influence of Contact Angle on the Internal Flow in a Freezing Water Droplet","authors":"Erik Fagerström, A. Ljung","doi":"10.11159/htff22.153","DOIUrl":"https://doi.org/10.11159/htff22.153","url":null,"abstract":"Ice accretion upon a surface is of interest in areas such as wind power, electric power transmission and vehicles in cold climate. Ice assimilation appears when humid air or water droplets impacts and freezes on a cold surface. In the study presented in this paper, droplets are deposited onto aluminium plates constructed to generate a specific contact angle between the droplet and substrate. Five contact angles are investigated and Particle Image Velocimetry (PIV) is used to analyse the internal flow. The droplets are studied along the vertical centerline and at horizontal lines at distances of 50% and 75% of the total height of the droplet. From the results it is found that a lower contact angle will increase the magnitude of the internal flow close to the edges. A larger contact angle will instead increase the magnitude of the flow in the center of the droplet. For a droplet with lower contact angle it was furthermore found that there is a triangular area inside the droplet with close to zero velocity.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133831551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Bonet, M. Bascompta, P. Palà, Eduard Cámara, Arnau Arumi
{"title":"Development Of A Low-Cost Microelectromechanical System For The Digitisation Of Bore-holes","authors":"J. Bonet, M. Bascompta, P. Palà, Eduard Cámara, Arnau Arumi","doi":"10.11159/mmme22.131","DOIUrl":"https://doi.org/10.11159/mmme22.131","url":null,"abstract":"","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130135959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Inhibition Efficiency of Pineapple Crown Extract for Iron B500 in H2SO4and Hcl Media\u0000Load","authors":"A. Jano, Alketa Lame, E. Kokalari","doi":"10.11159/iccpe22.113","DOIUrl":"https://doi.org/10.11159/iccpe22.113","url":null,"abstract":"","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130470720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
– The Limpopo and Northern Cape provinces of South Africa host hematitic iron ore deposits that, geologically, form part of the Transvaal Supergroup. Due to various geological processes that took place during the formation of the ore, textures are variable, and may be qualitatively described as massive, laminated, conglomeratic, brecciated, etc. These textures affect the separation efficiency during processing to upgrade low-grade ore by gravity separation. Mineralogy plays a crucial role during beneficiation; the obtained particle mineralogy can be linked to density classes to predict particle distribution during processing. Measures can thus be taken to improve the separation efficiency. Commonly used mineralogical techniques like automated scanning electron microscopy (AutoSEM) and optical microscopy, however, are not well-suited for coarse particle characterisation. For this study, therefore, the emerging technique, micro-X-ray fluorescence (micro-XRF) imaging, was investigated to produce elemental maps for texture characterisation on coarse particles (>6mm) of an Fe ore sample from Limpopo, together with X-ray diffraction (XRD) to characterise the coarse particle samples. The results show that the ore contains massive hematite as well as laminated hematite-quartz particles. These preliminary results predict that, for sink-float separation tests, massive hematite particles will be recovered at high density, but laminated hematite-gangue particles will be lost to the floats at different density classes, dependent on the ratio of hematite:gangue in the particles. Quantification of these effects is the next step in the study, towards establishing a predictive method for coarse particle distribution in gravity separation of Fe ore.
{"title":"Iron Ore Coarse Particle Characterisation: Towards Prediction of Particle Distribution in Gravity Separation Processing","authors":"Mapadi Olifant, D. Chetty, Bert L. Smith","doi":"10.11159/mmm22.134","DOIUrl":"https://doi.org/10.11159/mmm22.134","url":null,"abstract":"– The Limpopo and Northern Cape provinces of South Africa host hematitic iron ore deposits that, geologically, form part of the Transvaal Supergroup. Due to various geological processes that took place during the formation of the ore, textures are variable, and may be qualitatively described as massive, laminated, conglomeratic, brecciated, etc. These textures affect the separation efficiency during processing to upgrade low-grade ore by gravity separation. Mineralogy plays a crucial role during beneficiation; the obtained particle mineralogy can be linked to density classes to predict particle distribution during processing. Measures can thus be taken to improve the separation efficiency. Commonly used mineralogical techniques like automated scanning electron microscopy (AutoSEM) and optical microscopy, however, are not well-suited for coarse particle characterisation. For this study, therefore, the emerging technique, micro-X-ray fluorescence (micro-XRF) imaging, was investigated to produce elemental maps for texture characterisation on coarse particles (>6mm) of an Fe ore sample from Limpopo, together with X-ray diffraction (XRD) to characterise the coarse particle samples. The results show that the ore contains massive hematite as well as laminated hematite-quartz particles. These preliminary results predict that, for sink-float separation tests, massive hematite particles will be recovered at high density, but laminated hematite-gangue particles will be lost to the floats at different density classes, dependent on the ratio of hematite:gangue in the particles. Quantification of these effects is the next step in the study, towards establishing a predictive method for coarse particle distribution in gravity separation of Fe ore.","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131742838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Danny Xavier Villalva León, G. García-Ros, J. Sánchez-Pérez, E. Castro-Rodríguez,, María Rosa Mena-Requena, M. Conesa
Extended Abstract In recent decades, advances in electronics have made it possible to use increasingly complex instrumentation within the many disciplines encompassed by engineering and, specifically, in soil mechanics. Thus, both at the level of field measurements and at the laboratory level, a wide variety of classic instruments, such as strain gauges, force or interstitial pressure transducers, are being modernized, with the electronic nature becoming increasingly important to the detriment of the mechanics. But, in addition to the electronic adaptation of these classic sensors used in soil mechanics, which allows for greater simplicity in data acquisition and subsequent computerized processing, in recent years a series of new techniques (in a more or less experimental phase) are being incorporated into the study of soil mechanics, to provide additional information, sometimes very valuable, to that obtained by classical methods. Within these new techniques is the study of acoustic emissions produced in soils when they are subjected to loading processes or imposed displacement. Based on this technique, scarcely studied to date, an investigation has been initiated that aims to characterize the acoustic emissions generated by soil grains when they are subjected to compression and/or shear processes. The investigations, which are being carried out at the Laboratory of Geotechnics of the Universidad Politécnica de Cartagena
{"title":"An Overview of the Study of Acoustic Emissions in Soil Mechanics","authors":"Danny Xavier Villalva León, G. García-Ros, J. Sánchez-Pérez, E. Castro-Rodríguez,, María Rosa Mena-Requena, M. Conesa","doi":"10.11159/icmie22.122","DOIUrl":"https://doi.org/10.11159/icmie22.122","url":null,"abstract":"Extended Abstract In recent decades, advances in electronics have made it possible to use increasingly complex instrumentation within the many disciplines encompassed by engineering and, specifically, in soil mechanics. Thus, both at the level of field measurements and at the laboratory level, a wide variety of classic instruments, such as strain gauges, force or interstitial pressure transducers, are being modernized, with the electronic nature becoming increasingly important to the detriment of the mechanics. But, in addition to the electronic adaptation of these classic sensors used in soil mechanics, which allows for greater simplicity in data acquisition and subsequent computerized processing, in recent years a series of new techniques (in a more or less experimental phase) are being incorporated into the study of soil mechanics, to provide additional information, sometimes very valuable, to that obtained by classical methods. Within these new techniques is the study of acoustic emissions produced in soils when they are subjected to loading processes or imposed displacement. Based on this technique, scarcely studied to date, an investigation has been initiated that aims to characterize the acoustic emissions generated by soil grains when they are subjected to compression and/or shear processes. The investigations, which are being carried out at the Laboratory of Geotechnics of the Universidad Politécnica de Cartagena","PeriodicalId":385356,"journal":{"name":"Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134328999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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