Pub Date : 2021-06-14DOI: 10.1504/IJSMSS.2021.115783
M. Domaneschi, G. Cimellaro, Lili Xie, M. Bruneau, Zhishen Wu, M. Didier, Mohammad Noori, A. Mufti, Xilin Lu, Xinzheng Lu, Jinping Ou, S. Sheikh, Ying Zhou, T. Yoda, E. Taciroglu, I. Häring, A. Sextos
Community resilience against major disasters is a multidisciplinary research field that garners an ever-increasing interest worldwide. This paper provides summaries of the discussions held on the subject matter and the research outcomes presented during the Second Resilience Workshop in Nanjing and Shanghai. It, thus, offers a community view of present work and future research directions identified by the workshop participants who hail from Asia - including China, Japan and Korea; Europe and the Americas.
{"title":"Present and future resilience research driven by science and technology","authors":"M. Domaneschi, G. Cimellaro, Lili Xie, M. Bruneau, Zhishen Wu, M. Didier, Mohammad Noori, A. Mufti, Xilin Lu, Xinzheng Lu, Jinping Ou, S. Sheikh, Ying Zhou, T. Yoda, E. Taciroglu, I. Häring, A. Sextos","doi":"10.1504/IJSMSS.2021.115783","DOIUrl":"https://doi.org/10.1504/IJSMSS.2021.115783","url":null,"abstract":"Community resilience against major disasters is a multidisciplinary research field that garners an ever-increasing interest worldwide. This paper provides summaries of the discussions held on the subject matter and the research outcomes presented during the Second Resilience Workshop in Nanjing and Shanghai. It, thus, offers a community view of present work and future research directions identified by the workshop participants who hail from Asia - including China, Japan and Korea; Europe and the Americas.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132900235","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}
Pub Date : 2020-08-13DOI: 10.1504/ijsmss.2020.10031289
Sutanu Bhowmick, Satish Nagarajaiah
Real-time automatic detection of multiple cracks from a video stream of a concrete surface is addressed in this paper. Robust principal component analysis is used to detect multiple cracks forming at different instances of time in an unsupervised manner using the Gini index as a metric to quantify the presence of an observable crack. The relative positions of the relevant pixels around the crack are monitored using the Kanade Lucas Tomasi feature tracking algorithm. Further, Hu's invariant moments of those pixel positions are computed which acts as a robust damage indicator even for breathing cracks under time-varying service loads. The proposed method is experimentally validated using two small scale under-reinforced beams undergoing three-point bending tests. The method successfully detects the onset of multiple cracks, at varied locations, at different time instants and further tracks their propagations.
本文研究了混凝土表面多裂纹视频流的实时自动检测问题。鲁棒主成分分析用于检测多个裂纹形成在不同的时间实例在一个无监督的方式使用基尼指数作为度量来量化可观察到的裂纹的存在。使用Kanade Lucas Tomasi特征跟踪算法监测裂纹周围相关像素的相对位置。进一步，计算了这些像素位置的Hu不变矩，即使对于时变服务载荷下的呼吸裂纹，也可以作为鲁棒的损伤指标。采用两根小尺度下加筋梁进行三点弯曲试验，验证了该方法的有效性。该方法成功地检测了多个裂缝在不同位置、不同时刻的开始，并进一步跟踪了它们的传播。
{"title":"Automatic detection and damage quantification of multiple cracks on concrete surface from video","authors":"Sutanu Bhowmick, Satish Nagarajaiah","doi":"10.1504/ijsmss.2020.10031289","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10031289","url":null,"abstract":"Real-time automatic detection of multiple cracks from a video stream of a concrete surface is addressed in this paper. Robust principal component analysis is used to detect multiple cracks forming at different instances of time in an unsupervised manner using the Gini index as a metric to quantify the presence of an observable crack. The relative positions of the relevant pixels around the crack are monitored using the Kanade Lucas Tomasi feature tracking algorithm. Further, Hu's invariant moments of those pixel positions are computed which acts as a robust damage indicator even for breathing cracks under time-varying service loads. The proposed method is experimentally validated using two small scale under-reinforced beams undergoing three-point bending tests. The method successfully detects the onset of multiple cracks, at varied locations, at different time instants and further tracks their propagations.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133096079","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}
Pub Date : 2020-08-13DOI: 10.1504/ijsmss.2020.10031272
R. Al-Saleh, Y. Ni
Structural condition assessment using structural health monitoring (SHM) real-time data is performed in this research for the Canton Tower in China by three different approaches. Firstly, by evaluating frequency and phase angle relations with time during typhoon event using Hilbert-Huang transform (HHT) combined with empirical mode decomposition (EMD) technique. Secondly, by evaluating mode shape dependent indexes, considering mode shapes obtained by an improved-HHT approach applied on decomposed signals by EMD after another typhoon, then verifying these indexes by those evaluated based on mode shapes obtained by the frequency domain decomposition method. Thirdly, a new formulation of an index based on the energy of the intrinsic modal functions produced by the EMD technique is proposed and verified. The results of the three approaches confirmed the tower did not suffer any damage caused by the considered extreme events. Nevertheless, their benefits varied from one desired assessment to the other.
{"title":"Condition assessment of a supertall structure by an improved Hilbert-Huang transform and empirical mode decomposition method","authors":"R. Al-Saleh, Y. Ni","doi":"10.1504/ijsmss.2020.10031272","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10031272","url":null,"abstract":"Structural condition assessment using structural health monitoring (SHM) real-time data is performed in this research for the Canton Tower in China by three different approaches. Firstly, by evaluating frequency and phase angle relations with time during typhoon event using Hilbert-Huang transform (HHT) combined with empirical mode decomposition (EMD) technique. Secondly, by evaluating mode shape dependent indexes, considering mode shapes obtained by an improved-HHT approach applied on decomposed signals by EMD after another typhoon, then verifying these indexes by those evaluated based on mode shapes obtained by the frequency domain decomposition method. Thirdly, a new formulation of an index based on the energy of the intrinsic modal functions produced by the EMD technique is proposed and verified. The results of the three approaches confirmed the tower did not suffer any damage caused by the considered extreme events. Nevertheless, their benefits varied from one desired assessment to the other.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125183736","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}
Pub Date : 2020-08-13DOI: 10.1504/ijsmss.2020.10031273
K. Hamdaoui
This paper is a state of the art of the experience gathered by the author on the use of shape memory alloys (SMAs) in civil engineering. Since 2005, efforts have been focused on the invention of a new concept of base isolation and the retrofitting of monuments. First, an innovative system consisting of several SMA bars of particular geometry was proposed. Its numerical model was built, realised and experimentally tested. It was concluded that for cyclic loading, a large amount of energy was dissipated. Then and following conclusions drawn from laboratory tests, SMA wires were inserted practically and numerically on a number of monuments: the aqueduct of Larnaca (Cyprus), the minaret of Ajloun (Jordan) and the minaret of Mansourah (Algeria). The monuments were reinforced with different SMA devices distributed over different positions. The proposed technique was proved as significant via the improvement seen in the dynamic response of monuments.
{"title":"State-of-the-art: shape memory alloys for monumental consolidation and base isolation","authors":"K. Hamdaoui","doi":"10.1504/ijsmss.2020.10031273","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10031273","url":null,"abstract":"This paper is a state of the art of the experience gathered by the author on the use of shape memory alloys (SMAs) in civil engineering. Since 2005, efforts have been focused on the invention of a new concept of base isolation and the retrofitting of monuments. First, an innovative system consisting of several SMA bars of particular geometry was proposed. Its numerical model was built, realised and experimentally tested. It was concluded that for cyclic loading, a large amount of energy was dissipated. Then and following conclusions drawn from laboratory tests, SMA wires were inserted practically and numerically on a number of monuments: the aqueduct of Larnaca (Cyprus), the minaret of Ajloun (Jordan) and the minaret of Mansourah (Algeria). The monuments were reinforced with different SMA devices distributed over different positions. The proposed technique was proved as significant via the improvement seen in the dynamic response of monuments.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127021159","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}
Pub Date : 2020-08-13DOI: 10.1504/IJSMSS.2020.10031284
B. Fitzgerald, B. Basu
The wind energy sector globally is expanding and developing technically at a rapid pace. Demand for renewable energy is soaring and there is a need for increasing the efficiency and design life of wind turbine structures. The concept of using approaches and techniques developed in the field of structural control for control of wind turbine vibrations is extremely attractive and topical at present. We review the contributions of work on vibration control of wind turbines. We provide an overview on the recent literature focussing on theoretical and experimental work. Passive, semi-active and active control schemes are discussed. The development of bespoke auxiliary damping systems is also discussed as are novel turbine control algorithms utilising existing pitch/generator torque/yaw control hardware.
{"title":"Vibration control of wind turbines: recent advances and emerging trends","authors":"B. Fitzgerald, B. Basu","doi":"10.1504/IJSMSS.2020.10031284","DOIUrl":"https://doi.org/10.1504/IJSMSS.2020.10031284","url":null,"abstract":"The wind energy sector globally is expanding and developing technically at a rapid pace. Demand for renewable energy is soaring and there is a need for increasing the efficiency and design life of wind turbine structures. The concept of using approaches and techniques developed in the field of structural control for control of wind turbine vibrations is extremely attractive and topical at present. We review the contributions of work on vibration control of wind turbines. We provide an overview on the recent literature focussing on theoretical and experimental work. Passive, semi-active and active control schemes are discussed. The development of bespoke auxiliary damping systems is also discussed as are novel turbine control algorithms utilising existing pitch/generator torque/yaw control hardware.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130867050","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}
Pub Date : 2020-08-13DOI: 10.1504/ijsmss.2020.10031283
V. Torra, F. Lovey
The civil engineering equipment, such as the bridges, were located outside the laboratory equipment and were subject to the direct effect of the external temperatures. In moderate climates, the summer and winter temperatures vary between −10°C and 40°C, but in northern Europe or Canada, the cold temperatures can easily reach −50°C or lower. The temperature modifies the SMA behaviour by the action of the Clausius-Clapeyron thermodynamic equation. The analysis performed in this work focuses on the similarity, suitability and guaranteed behaviour of NiTi SMA wires with different diameters. In particular, the study establishes the effects of the summer-winter temperature variation on the SMA. It was found that the external temperature has a negative effect on the thinner wires in comparison with the valuable behaviour of thicker wires. The particular effects of the diameter are enhanced when the samples are submitted to strain-aging.
{"title":"Intrinsic differences between thinner and thicker wires in NiTi SMA","authors":"V. Torra, F. Lovey","doi":"10.1504/ijsmss.2020.10031283","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10031283","url":null,"abstract":"The civil engineering equipment, such as the bridges, were located outside the laboratory equipment and were subject to the direct effect of the external temperatures. In moderate climates, the summer and winter temperatures vary between −10°C and 40°C, but in northern Europe or Canada, the cold temperatures can easily reach −50°C or lower. The temperature modifies the SMA behaviour by the action of the Clausius-Clapeyron thermodynamic equation. The analysis performed in this work focuses on the similarity, suitability and guaranteed behaviour of NiTi SMA wires with different diameters. In particular, the study establishes the effects of the summer-winter temperature variation on the SMA. It was found that the external temperature has a negative effect on the thinner wires in comparison with the valuable behaviour of thicker wires. The particular effects of the diameter are enhanced when the samples are submitted to strain-aging.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"364 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126294720","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}
Pub Date : 2020-08-13DOI: 10.1504/ijsmss.2020.10031092
A. Osman, A. Hamed, N. Aly
Ground-penetrating radar (GPR) is a modern geophysical tool that was developed for prospecting the ground subsurface. Recently, it has shown great potential for providing valuable information about the integrity of masonry structures. In this study, GPR was used to evaluate the state of bulk mason walls utilised as base foundation for the five historical minarets of Al-Azhar mosque in Cairo, Egypt constructed in different historical periods extending from Mamluk era to Ottoman era. The obtained results provided useful knowledge concerning the composition of the minaret bases and stones arrangement. Also, it showed the existence of multiple anomalies, indicating cavities that are probably caused by migration of fine filling materials downward. Limits of internal water content were clearly identified and salinity inside the wall filling was recognised. Based on these results, a decision was taken to re-inject the fine material lost through time inside the bases, to regain their structural integrity.
{"title":"Ground-penetrating radar investigation for the restoration of Al-Azhar historical minarets","authors":"A. Osman, A. Hamed, N. Aly","doi":"10.1504/ijsmss.2020.10031092","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10031092","url":null,"abstract":"Ground-penetrating radar (GPR) is a modern geophysical tool that was developed for prospecting the ground subsurface. Recently, it has shown great potential for providing valuable information about the integrity of masonry structures. In this study, GPR was used to evaluate the state of bulk mason walls utilised as base foundation for the five historical minarets of Al-Azhar mosque in Cairo, Egypt constructed in different historical periods extending from Mamluk era to Ottoman era. The obtained results provided useful knowledge concerning the composition of the minaret bases and stones arrangement. Also, it showed the existence of multiple anomalies, indicating cavities that are probably caused by migration of fine filling materials downward. Limits of internal water content were clearly identified and salinity inside the wall filling was recognised. Based on these results, a decision was taken to re-inject the fine material lost through time inside the bases, to regain their structural integrity.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114371467","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}
Pub Date : 2020-08-13DOI: 10.1504/ijsmss.2020.10031279
M. Domaneschi, S. Casciati, N. Catbas, G. Cimellaro, D. Inaudi, G. Marano
This work presents an overview of some of the most promising technologies for the structural health monitoring (SHM) of in-service tunnels. The common goal of damage or unusual behaviour detection is best pursued by an integrated approach based on the concurrent deployment of multiple technologies. Typically, traditional SHM systems are installed in problematic or special areas of the tunnels, giving information on conditions and helping manage maintenance. However, these methodologies often have the drawbacks of forcing the interruption of traffic for SHM system installation and monitoring only selected portions. Alternative solutions that would make it possible to keep the tunnel in normal operation and/or to analyse the entire infrastructure development through successive and continuous scanning stages, would be beneficial. In this paper, the authors will briefly review some traditional monitoring technologies for tunnels. Furthermore, the work is aimed at identifying alternative solutions, limiting or avoiding traffic interruptions.
{"title":"Structural health monitoring of in-service tunnels","authors":"M. Domaneschi, S. Casciati, N. Catbas, G. Cimellaro, D. Inaudi, G. Marano","doi":"10.1504/ijsmss.2020.10031279","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10031279","url":null,"abstract":"This work presents an overview of some of the most promising technologies for the structural health monitoring (SHM) of in-service tunnels. The common goal of damage or unusual behaviour detection is best pursued by an integrated approach based on the concurrent deployment of multiple technologies. Typically, traditional SHM systems are installed in problematic or special areas of the tunnels, giving information on conditions and helping manage maintenance. However, these methodologies often have the drawbacks of forcing the interruption of traffic for SHM system installation and monitoring only selected portions. Alternative solutions that would make it possible to keep the tunnel in normal operation and/or to analyse the entire infrastructure development through successive and continuous scanning stages, would be beneficial. In this paper, the authors will briefly review some traditional monitoring technologies for tunnels. Furthermore, the work is aimed at identifying alternative solutions, limiting or avoiding traffic interruptions.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114502623","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}
Pub Date : 2020-03-30DOI: 10.1504/ijsmss.2020.10028035
Janmajeya Barik, R. Patra, Bibhuti Bhusan Mukharjee, Sanghamitra Jena
The influence of the use of recycled fine aggregates as replacement natural fine aggregate on properties of cement mortar has been investigated using the procedures of general factorial design. In this study, the incorporation percentage of recycled fine aggregate (RFA %) and water-cement (w/c) ratio are selected as factors and compressive strength and water absorption as responses. The levels of RFA (%) are fixed at 0%, 10%, 20%, and 30% and the levels of other factor w/c ratio was kept at 0.4, 0.45, and 0.5. Compressive strength (CS) and water absorption (WA) of mortar mixes prepared with varying levels of aforementioned factors are selected responses. Analysis of variance (ANOVA) has been performed over test results for analysing the significance of factors and their interaction on selected responses. The results of study depict that the selected factors are significantly affecting the responses; however, no substantial influence of interaction between the factors on responses are observed.
{"title":"Effect of recycled fine aggregate on properties of mortar: a factorial design approach","authors":"Janmajeya Barik, R. Patra, Bibhuti Bhusan Mukharjee, Sanghamitra Jena","doi":"10.1504/ijsmss.2020.10028035","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10028035","url":null,"abstract":"The influence of the use of recycled fine aggregates as replacement natural fine aggregate on properties of cement mortar has been investigated using the procedures of general factorial design. In this study, the incorporation percentage of recycled fine aggregate (RFA %) and water-cement (w/c) ratio are selected as factors and compressive strength and water absorption as responses. The levels of RFA (%) are fixed at 0%, 10%, 20%, and 30% and the levels of other factor w/c ratio was kept at 0.4, 0.45, and 0.5. Compressive strength (CS) and water absorption (WA) of mortar mixes prepared with varying levels of aforementioned factors are selected responses. Analysis of variance (ANOVA) has been performed over test results for analysing the significance of factors and their interaction on selected responses. The results of study depict that the selected factors are significantly affecting the responses; however, no substantial influence of interaction between the factors on responses are observed.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116095284","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}
Pub Date : 2020-03-30DOI: 10.1504/ijsmss.2020.10028030
Jalen C. Mano, E. Elghandour
This paper presents the optimum design, manufacturing, and testing of corrugated sandwich panel structures under edgewise compression loading. A bio-composite was integrated in both the core and the skin in corrugated sandwich panels. The cases tested were all-carbon fibre, hemp skin with carbon fibre core, carbon fibre skin with hemp core and all-hemp. Compression loading tests were conducted on varying lengths of single-ligament panels utilising trapezoidal corrugation as the core and a flat plate as the skin. The ultimate load and stiffness were investigated for each sample, as well as the failure modes seen. It is shown that, first, hemp fibres are viable as a substitute for certain sections of the traditional composite structure, and second, integrating hemp fibres can solve the problems of debonding seen in the all-carbon fibre samples seen in previous research.
{"title":"Effects of bio-composites in sandwich panels with an optimum corrugated cores under edgewise compression loading","authors":"Jalen C. Mano, E. Elghandour","doi":"10.1504/ijsmss.2020.10028030","DOIUrl":"https://doi.org/10.1504/ijsmss.2020.10028030","url":null,"abstract":"This paper presents the optimum design, manufacturing, and testing of corrugated sandwich panel structures under edgewise compression loading. A bio-composite was integrated in both the core and the skin in corrugated sandwich panels. The cases tested were all-carbon fibre, hemp skin with carbon fibre core, carbon fibre skin with hemp core and all-hemp. Compression loading tests were conducted on varying lengths of single-ligament panels utilising trapezoidal corrugation as the core and a flat plate as the skin. The ultimate load and stiffness were investigated for each sample, as well as the failure modes seen. It is shown that, first, hemp fibres are viable as a substitute for certain sections of the traditional composite structure, and second, integrating hemp fibres can solve the problems of debonding seen in the all-carbon fibre samples seen in previous research.","PeriodicalId":443815,"journal":{"name":"International Journal of Sustainable Materials and Structural Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126516910","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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