نتایج جستجو برای: brittle materials

تعداد نتایج: 442432  

Journal: :Physical review letters 2005
X K Xi D Q Zhao M X Pan W H Wang Y Wu J J Lewandowski

We report a brittle Mg-based bulk metallic glass which approaches the ideal brittle behavior. However, a dimple structure is observed at the fracture surface by high resolution scanning electron microscopy, indicating some type of "ductile" fracture mechanism in this very brittle glass. We also show, from the available data, a clear correlation between the fracture toughness and plastic process...

Journal: :Journal of the Mining and Metallurgical Institute of Japan 1979

2001
E. w.

The object of this investigation was to gain a better understanding of the flow and fracture propensity of steel plates in which the Wells-type notch served as the fracture initiator. This type of notch is of importance in experimental investigations of the brittle fracture phenomenon because it successfully initiates low-stress brittle fractures in the wide-plate specimen in which it is used. ...

Journal: :Journal of the Society of Materials Science, Japan 1969

Journal: :CoRR 2017
Yiming Zhang Xiaoying Zhuang

Quasi-brittle materials such as concrete suffer from cracks during their life cycle, requiring great cost for conventional maintenance or replacement. In the last decades, self-healing materials are developed which are capable of filling and healing the cracks and regaining part of the stiffness and strength automatically after getting damaged, bringing the possibility of maintenance-free mater...

2016
Wei Li Tristan Delaney Xiangmin Jiao Roman Samulyak Cao Lu

A new computational model for brittle fracture and fragmentation has been developed based on finite element analysis of non-linear elasticity equations. The proposed model propagates the cracks by splitting the mesh nodes alongside the most over-strained edges based on the principal direction of strain tensor. To prevent elements from overlapping and folding under large deformations, robust geo...

Journal: :Bulletin of Materials Science 1995

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