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Guo Li, Yida Teng and Huimin Zhou
Aero engine compressor disks are typically life-limited parts and it is necessary to secure them through the implementation of an engineering plan and a manufacturing plan. Specifically, the engineering plan recommends the quantification of the safety of...
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Zhixiong Peng, Yawu Zeng, Xi Chen and Shufan Cheng
Rock damage caused by its microcrack growth has a great influence on the deformation and strength properties of rock under compressive loading. Considering the interaction of wing cracks and the additional stress caused by rock bridge damage, a new calcu...
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Mohammed Lahlou, Nadia Mouhib, Hanaa Ouaomar, Abdelilah Hachim, Mohamed Elghorba
Pág. 233 - 237
In metallic structures, cracks are mostly initiated at geometric discontinuities of notches or defects. The geometric parameters and discontinuities govern cracks initiation or propagation and therefore affect the resistance of structures during their us...
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Estefanía Gómez-Gamboa, Jorge Guillermo Díaz-Rodríguez, Jairo Andrés Mantilla-Villalobos, Oscar Rodolfo Bohórquez-Becerra and Manuel del Jesús Martínez
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Jinfeng Liu, Guoqing Feng, Jiaying Wang, Huilong Ren, Wei Song and Panpan Lin
Welding defects are known to cause crack propagation and reduce structural fatigue performance. Based on the Paris theory of fracture mechanics, research is conducted on evaluation methods for analyzing fatigue crack propagation by adopting random loads ...
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George Xiroudakis, George Saratsis and Ilias Lazos
This paper uses the displacement discontinuity method, one of the boundary element methods, to solve two major engineering problems. The first one addresses the safe design of underground excavations in fractured rock masses. The implemented method was u...
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Zhiqiang Xu, Yunxian Cui, Baoliang Li, Ketong Liu, Feiting Shi and Peng Cao
A fatigue test on the failure mode of flange shafts was conducted. The propagation characteristics of the initial crack at the junction between the shaft and the flange as well as its angle effect were studied. This study developed an analysis program of...
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Peng Yu, Xuefeng Huang, Youping Gong and Shengji Li
The automatic opening of an ampoule bottle is key to making the operation of the sterility inspection automatic. During the automatic opening, the fracture characteristics on the neck of ampoule bottle need to be deeply understood to avoid the contaminat...
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Chenchun Chiu, Shaochen Tseng, Chingkong Chao and Jheyuan Guo
The failure analysis of a non-circular hole with an inclusion layer embedded in an infinite cracked matrix under a remote in-plane uniform load is presented. In this study, a series solution of stress functions for both the matrix and inclusion layer is ...
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Jiuzhou Huang, Xin Pan, Jianxiong Li, Shiming Dong and Wen Hua
This paper concerns the effect of friction on crack propagation for the centrally cracked Brazilian disk under diametric forces by using a modified finite element method. It shows that the mode II stress intensity factor decreases obviously with the incr...
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Jelena M. Djokovic, Ru?ica R. Nikolic, Robert Ulewicz and Branislav Hadzima
The problem of an interface crack that approaches a three-material joint with two interfaces is analyzed in this paper. Two possible cases are considered: the crack that lies at the interface between materials A and B, approaching the joint of materials ...
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Chung-Hao Wu, Chung-Ho Huang, Yu-Cheng Kan and Tsong Yen
This study focuses on evaluating the effects of the fineness of fly ash on the strength, fracture toughness, and fracture resistance of concrete. Three fineness levels of fly ash that respectively pass sieves?no. 175, no. 250, and no. 32?were used. In ad...
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Makoto Akama and Akira Kiuchi
Rolling contact fatigue cracks in rail and wheel undergo non-proportional mixed mode I/II/III loading. Fatigue tests were performed to determine the coplanar and branch crack growth rates on these materials. Sequential and overlapping mode I and III load...
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Fei Wang, Meng Wang, Mohaddeseh Mousavi Nezhad, Hao Qiu, Peng Ying and Caoyuan Niu
The objective of this paper is to investigate the complete process of dynamic crack propagation in brittle materials under different loading rates. By using Improved Single Cleavage Semi-Circle (ISCSC) specimens and Split Hopkinson Pressure Bar equipment...
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Ahmed Abuzaid, Meftah Hrairi and Mohd Sultan Ibrahim Bin Shaik Dawood
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Nabil Benamara, Abdelkader Boulenouar, Miloud Aminallah
Pág. 60 - 67
The objective of this work is to present a numerical modeling of crack propagation path in functionally graded materials (FGMs) under mixed-mode loadings. The minimum strain energy density criterion (MSED) and the displacement extrapolation technique (DE...
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Atur P. N. Siregar,M. I. Rafiq,M. Mulheron
Pág. 65 - 71
This paper presents the experimental results in investigating the effect of specimen size (ratio of beam width to aggregate size) on the value of stress intensity factor (KIC) and fracture energy (GF) using three-point bend (TPB). A test method recommend...
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Martin ?evcík,Pavel Hutar,Lubo? Náhlík,Zdenek Knésl
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Pontjo Utomo,Hamid R. Nikraz
Pág. pp. 25 - 32
Fracture mechanics is a branch of mechanics, which deals with the cracked body. Every construction material that currently in use inevitably is not flawless. The pre-existing crack may grow to cause structure failure due to low stress, which acts to a st...
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Djamila Benarbia, Mohamed Benguediab
Pág. 199 - 203
Concrete is a brittle material with high compressive strength, low tensile strength and poor toughness, where cracks of different degrees and different forms can be developed, which compromises the durability and the lifetime of concrete structures. The ...
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