Pub Date : 2024-06-22DOI: 10.1007/s10704-024-00801-7
Pei Chen, Shaowei Li, Rui Pan, Senyu Tu, Fei Qin
The existing mechanical dicing process of single crystalline Silicon Carbide (SiC) is one of the main factors limiting the development of semiconductor process, which could be replaced by laser scribing potentially. To achieve efficient and low-damage SiC separation, the cracking behavior of SiC after laser grooving should be well understood and controllable. Since the laser grooving including thermal ablation and meltage solidification, the cracking behavior of the scribed SiC would be different to the original single crystal SiC. In this paper, cohesive zone model (CZM) is used to quantitively represent the cracking behavior of the nano-laser scribed SiC. The separation after scribing was conducted in a three-point bending (3 PB) fixture to characterize the cracking behavior. Therefore, by inverting the load–displacement curves of 3 PB with CZM embedded finite element model, the cohesive behavior is characterized by bilinear traction–separation law, which illustrated the whole cracking process numerically. The methodology established in current paper gives way to understand the SiC scribing and cracking process with quantitative cohesive parameters.
现有的单晶碳化硅(SiC)机械切割工艺是限制半导体工艺发展的主要因素之一,而激光划槽有可能取代这一工艺。为实现高效、低损伤的碳化硅分离,应充分了解和控制激光划槽后碳化硅的开裂行为。由于激光划槽包括热烧蚀和熔融凝固,因此划线后的碳化硅的开裂行为将不同于原始单晶碳化硅。本文采用内聚区模型(CZM)来定量表示纳米激光划线碳化硅的开裂行为。划线后的分离在三点弯曲(3 PB)夹具中进行,以表征开裂行为。因此,通过用 CZM 嵌入式有限元模型反演三点弯曲的载荷-位移曲线,用双线性牵引-分离定律来表征内聚行为,从而用数值说明了整个开裂过程。本文所建立的方法有助于理解具有定量内聚参数的 SiC 划线和开裂过程。
{"title":"Cohesive behavior of single crystalline silicon carbide scribing by nanosecond laser","authors":"Pei Chen, Shaowei Li, Rui Pan, Senyu Tu, Fei Qin","doi":"10.1007/s10704-024-00801-7","DOIUrl":"https://doi.org/10.1007/s10704-024-00801-7","url":null,"abstract":"<p>The existing mechanical dicing process of single crystalline Silicon Carbide (SiC) is one of the main factors limiting the development of semiconductor process, which could be replaced by laser scribing potentially. To achieve efficient and low-damage SiC separation, the cracking behavior of SiC after laser grooving should be well understood and controllable. Since the laser grooving including thermal ablation and meltage solidification, the cracking behavior of the scribed SiC would be different to the original single crystal SiC. In this paper, cohesive zone model (CZM) is used to quantitively represent the cracking behavior of the nano-laser scribed SiC. The separation after scribing was conducted in a three-point bending (3 PB) fixture to characterize the cracking behavior. Therefore, by inverting the load–displacement curves of 3 PB with CZM embedded finite element model, the cohesive behavior is characterized by bilinear traction–separation law, which illustrated the whole cracking process numerically. The methodology established in current paper gives way to understand the SiC scribing and cracking process with quantitative cohesive parameters.</p>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-13DOI: 10.1007/s10704-024-00800-8
R. Sunder
Construction of the Kitagawa–Takahashi (K–T) diagram requires inputs of two material properties, namely, endurance limit and threshold stress intensity range, ΔKth. Both are sensitive to applied stress ratio. The effect of stress ratio on endurance limit is well known. Unfortunately, crack closure, associated with the nature of conventional testing practice obscures the effect of stress ratio on intrinsic, closure free ΔKth that would apply to natural crack like defects and short cracks. This study was made possible by the development of a new test method to characterize closure free threshold conditions under controlled near-tip residual stress conditions that essentially determine near-tip stress ratio at threshold. A procedure is described to construct the K–T diagram, using ΔKth values corrected for stress ratio and applicable to pre-existing defects and short cracks at notches that are unlikely to see closure. As a case study, a K–T diagram valid for different applied stress ratios is constructed for titanium alloy Ti-6Al-4V.
{"title":"Construction of Kitagawa–Takahashi diagrams as a function of applied stress ratio","authors":"R. Sunder","doi":"10.1007/s10704-024-00800-8","DOIUrl":"https://doi.org/10.1007/s10704-024-00800-8","url":null,"abstract":"<p>Construction of the Kitagawa–Takahashi (K–T) diagram requires inputs of two material properties, namely, endurance limit and threshold stress intensity range, <i>ΔK</i><sub><i>th</i></sub>. Both are sensitive to applied stress ratio. The effect of stress ratio on endurance limit is well known. Unfortunately, crack closure, associated with the nature of conventional testing practice obscures the effect of stress ratio on intrinsic, closure free <i>ΔK</i><sub><i>th</i></sub> that would apply to natural crack like defects and short cracks. This study was made possible by the development of a new test method to characterize closure free threshold conditions under controlled near-tip residual stress conditions that essentially determine near-tip stress ratio at threshold. A procedure is described to construct the K–T diagram, using <i>ΔK</i><sub><i>th</i></sub> values corrected for stress ratio and applicable to pre-existing defects and short cracks at notches that are unlikely to see closure. As a case study, a K–T diagram valid for different applied stress ratios is constructed for titanium alloy Ti-6Al-4V.</p>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-13DOI: 10.1007/s10704-024-00799-y
Ondřej Peter, M. Stěnička, Gert Heinrich, Christopher G. Robertson, Jakub Pawlas, R. Stoček, Jan Ondrík
{"title":"The tearing energy threshold of crack growth in rubber exposed to ozone: an experimental–numerical approach","authors":"Ondřej Peter, M. Stěnička, Gert Heinrich, Christopher G. Robertson, Jakub Pawlas, R. Stoček, Jan Ondrík","doi":"10.1007/s10704-024-00799-y","DOIUrl":"https://doi.org/10.1007/s10704-024-00799-y","url":null,"abstract":"","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141347528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-12DOI: 10.1007/s10704-024-00796-1
Yinan Xie, Xiaoli Hao, Zumin Wang, Yuan Huang
{"title":"Integrating atomistics and experiments in gaining deeper insights into fatigue crack propagation in silver","authors":"Yinan Xie, Xiaoli Hao, Zumin Wang, Yuan Huang","doi":"10.1007/s10704-024-00796-1","DOIUrl":"https://doi.org/10.1007/s10704-024-00796-1","url":null,"abstract":"","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141350746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-05DOI: 10.1007/s10704-024-00797-0
Matej Šodan, A. Stanic, Mijo Nikolić
{"title":"Enhanced solid element model with embedded strong discontinuity for representation of mesoscale quasi-brittle failure","authors":"Matej Šodan, A. Stanic, Mijo Nikolić","doi":"10.1007/s10704-024-00797-0","DOIUrl":"https://doi.org/10.1007/s10704-024-00797-0","url":null,"abstract":"","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141384025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-29DOI: 10.1007/s10704-024-00795-2
Deepak Sharma, I. V. Singh, Jalaj Kumar, Shahnawaz Ahmed
Accurate fatigue life prediction of polycrystalline materials is crucial for many engineering applications. In polycrystalline materials, a significant portion of life is spent in the crack nucleation phase at the microstructural scale. Hence, the total fatigue life shows high sensitivity to the local microstructure. To predict fatigue life accurately, the microstructure models of polycrystalline material i.e., titanium alloy are virtually generated with the help of the Voronoi tessellation technique. These models incorporate critical microstructural features such as grain size, grain shape, and the volume fraction of different phases within the material. To efficiently predict microstructure sensitive fatigue life, the smooth finite element method (SFEM) is coupled with continuum damage mechanics (CDM). The SFEM provides flexibility in the meshing of complex microstructure geometries as it alleviates the need to use only triangular and quadrilateral elements. Moreover, there is no need of isoparametric mapping and explicit form of shape function derivatives in SFEM, hence it requires less computation time. To obtain the fatigue life (in number of cycles), jump in cycles algorithm is implemented using SFEM-CDM. The numerical results of fatigue life data obtained from simulations are compared with experimental data, which reveals the validity of the present approach. This approach is useful to find out the scatter in fatigue life data of polycrystalline materials along with the source of scatter.
{"title":"Microstructure based fatigue life prediction of polycrystalline materials using SFEM and CDM","authors":"Deepak Sharma, I. V. Singh, Jalaj Kumar, Shahnawaz Ahmed","doi":"10.1007/s10704-024-00795-2","DOIUrl":"https://doi.org/10.1007/s10704-024-00795-2","url":null,"abstract":"<p>Accurate fatigue life prediction of polycrystalline materials is crucial for many engineering applications. In polycrystalline materials, a significant portion of life is spent in the crack nucleation phase at the microstructural scale. Hence, the total fatigue life shows high sensitivity to the local microstructure. To predict fatigue life accurately, the microstructure models of polycrystalline material i.e., titanium alloy are virtually generated with the help of the Voronoi tessellation technique. These models incorporate critical microstructural features such as grain size, grain shape, and the volume fraction of different phases within the material. To efficiently predict microstructure sensitive fatigue life, the smooth finite element method (SFEM) is coupled with continuum damage mechanics (CDM). The SFEM provides flexibility in the meshing of complex microstructure geometries as it alleviates the need to use only triangular and quadrilateral elements. Moreover, there is no need of isoparametric mapping and explicit form of shape function derivatives in SFEM, hence it requires less computation time. To obtain the fatigue life (in number of cycles), jump in cycles algorithm is implemented using SFEM-CDM. The numerical results of fatigue life data obtained from simulations are compared with experimental data, which reveals the validity of the present approach. This approach is useful to find out the scatter in fatigue life data of polycrystalline materials along with the source of scatter.</p>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-29DOI: 10.1007/s10704-024-00798-z
Marek Romanowicz, Maciej Grygorczuk
The fracture resistance of pinewood under mode I loading is investigated experimentally for different crack plane orientations and the crack propagation direction parallel to longitudinal cells. Experiments are conducted on double cantilever beams using a digital image correlation system to evaluate the crack tip opening displacement. The compliance based beam method is used to determine the energy release rate at various crack lengths. The decomposition of crack propagation into the pre-peak and post-peak propagations is proposed to find the fracture energy contributions from individual toughening mechanisms in pinewood. The cohesive strengths measured in the experiments are confirmed by comparison with the tensile strengths obtained from separate tests performed on pinewood. An analytical model for evaluating the fracture process zone is used to validate the experimental results. The difference between the fracture energy values in different crack propagation systems is explained by using X-ray microtomography images of the fracture surfaces.
通过实验研究了松木在模式 I 载荷作用下的抗断裂性能,包括不同的裂纹平面方向和平行于纵向单元的裂纹扩展方向。使用数字图像相关系统对双悬臂梁进行了实验,以评估裂纹尖端张开位移。基于顺应性的梁法用于确定不同裂缝长度下的能量释放率。提出了将裂纹扩展分解为前峰和后峰扩展的方法,以找出松木中各个增韧机制的断裂能量贡献。实验中测得的内聚强度通过与松木单独测试获得的拉伸强度进行比较得到了证实。评估断裂过程区的分析模型用于验证实验结果。通过断裂表面的 X 射线显微层析成像,解释了不同裂纹扩展系统中断裂能量值之间的差异。
{"title":"The effect of crack orientation on the mode I fracture resistance of pinewood","authors":"Marek Romanowicz, Maciej Grygorczuk","doi":"10.1007/s10704-024-00798-z","DOIUrl":"https://doi.org/10.1007/s10704-024-00798-z","url":null,"abstract":"<p>The fracture resistance of pinewood under mode I loading is investigated experimentally for different crack plane orientations and the crack propagation direction parallel to longitudinal cells. Experiments are conducted on double cantilever beams using a digital image correlation system to evaluate the crack tip opening displacement. The compliance based beam method is used to determine the energy release rate at various crack lengths. The decomposition of crack propagation into the pre-peak and post-peak propagations is proposed to find the fracture energy contributions from individual toughening mechanisms in pinewood. The cohesive strengths measured in the experiments are confirmed by comparison with the tensile strengths obtained from separate tests performed on pinewood. An analytical model for evaluating the fracture process zone is used to validate the experimental results. The difference between the fracture energy values in different crack propagation systems is explained by using X-ray microtomography images of the fracture surfaces.</p>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141171579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-17DOI: 10.1007/s10704-024-00781-8
Pierrick François, Tom Petit, Quentin Auzoux, David Le Boulch, Isabela Zarpellon Nascimento, Jacques Besson
{"title":"Assessing the fracture toughness of Zircaloy-4 fuel rod cladding tubes: impact of delayed hydride cracking","authors":"Pierrick François, Tom Petit, Quentin Auzoux, David Le Boulch, Isabela Zarpellon Nascimento, Jacques Besson","doi":"10.1007/s10704-024-00781-8","DOIUrl":"https://doi.org/10.1007/s10704-024-00781-8","url":null,"abstract":"","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140964526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Introduction to the special issue on failure mechanism in advanced materials and structures","authors":"Zengtao Chen, Minghao Zhao, Cunfa Gao, Efstathios Theotokoglou","doi":"10.1007/s10704-024-00793-4","DOIUrl":"https://doi.org/10.1007/s10704-024-00793-4","url":null,"abstract":"","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140963377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-05-17DOI: 10.1007/s10704-024-00794-3
Sharanagouda G. Malipatil, N. Nagarajappa, Ramesh Bojja, N. Jagannathan, A. N. Majila, D. C. Fernando, M. Manjuprasad, C. Manjunatha
{"title":"Fatigue crack growth behavior of a nickel-based superalloy under turbine standard spectrum loads","authors":"Sharanagouda G. Malipatil, N. Nagarajappa, Ramesh Bojja, N. Jagannathan, A. N. Majila, D. C. Fernando, M. Manjuprasad, C. Manjunatha","doi":"10.1007/s10704-024-00794-3","DOIUrl":"https://doi.org/10.1007/s10704-024-00794-3","url":null,"abstract":"","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":null,"pages":null},"PeriodicalIF":2.5,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140963629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}