SEM in-situ study on the effect of offset-notch on basalt cracking behavior under three-point bending load

2014 ◽  
Vol 131 ◽  
pp. 504-513 ◽  
Author(s):  
Jian-Ping Zuo ◽  
Xi-Shu Wang ◽  
De-Qiang Mao
Keyword(s):  
Cracking Behavior ◽  
Three Point Bending ◽  
In Situ Study ◽  
Bending Load

scholarly journals Three-point bending study on the microscopic fracture behavior of pre-oxidized Cr-coated Zr-4 alloys

2021 ◽  
Vol 2076 (1) ◽  
pp. 012051
Author(s):  
Mingyue Du ◽  
Chenxue Wang ◽  
Jishen Jiang ◽  
Xianfeng Ma
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Fracture Behavior ◽  
Early Stage ◽  
Bending Test ◽  
Cracking Behavior ◽  
Three Point Bending ◽  
Crack Penetration ◽  
Cr Coating

Abstract In this study, an in situ three-point bending test was carried out to study the mechanical properties and cracking behavior of the Cr-coated Zr-4 alloy considering the effect of pre-oxidation. The results showed that high temperature pre-oxidation led to the formation of intermetallic ZrCr2 at the coating/substrate interface and an α-Zr(O) layer beneath the interface. During the three-point bending test, the Cr coating and Zr-4 substrate showed good plastic deformation. However, the brittle intermetallic ZrCr2 diffusion layer exhibited cracks in the early stage, which accelerated the crack penetration to the Cr coating and the Zr-4 substrate, leading to the pre-failure of the pre-oxidized sample.

scholarly journals In-situ study of the fracture behavior of SiCf/SiC composite material under three-point bending

2021 ◽  
Vol 639 ◽  
pp. 012020
Author(s):  
Zhanguang Zheng ◽  
Yongbing Peng ◽  
Jishen Jiang ◽  
Xianfeng Ma ◽  
Enze Jin ◽  
...  
Keyword(s):  
Composite Material ◽  
Fracture Behavior ◽  
Three Point Bending ◽  
In Situ Study

scholarly journals Numerical modeling of cracking behavior in Cr coating for ATF cladding under three-point bending

2021 ◽  
Vol 2076 (1) ◽  
pp. 012088
Author(s):  
Mingduo Yuan ◽  
Ziyan Pan ◽  
Zhenyu Zou ◽  
Weijian Zhang ◽  
Mingyue Du ◽  
...  
Keyword(s):  
Cohesive Zone Model ◽  
Local Stress ◽  
In Situ Observation ◽  
Zone Model ◽  
Cracking Behavior ◽  
Three Point Bending ◽  
Interfacial Cracks ◽  
Crack Tips ◽  
Cr Coating

Abstract In-situ three-point bending tests and finite element modeling based on the cohesive zone model were developed to study the stress evolution and cracking behavior of the Cr coated Zr-4 alloy for accident tolerant fuel claddings. The initiation and propagation of micro-cracks were captured by in-situ observation and predicted by the numerical simulation. The results showed that vertical cracks first initiated from the coating surface and propagated to the Cr/Zr4 interface. Under larger bending strain, interfacial cracks began to initiate from the vertical crack tips driven by large local stress concentration.

scholarly journals Additive Manufacturing-Based In Situ Consolidation of Continuous Carbon Fibre-Reinforced Polycarbonate

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2450
Author(s):  
Andreas Borowski ◽  
Christian Vogel ◽  
Thomas Behnisch ◽  
Vinzenz Geske ◽  
Maik Gude ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Carbon Fibre ◽  
Bending Test ◽  
Thermoplastic Composites ◽  
Experimental Investigations ◽  
Material Structure ◽  
Three Point Bending ◽  
Continuous Fibre ◽  
Local Material

Continuous carbon fibre-reinforced thermoplastic composites have convincing anisotropic properties, which can be used to strengthen structural components in a local, variable and efficient way. In this study, an additive manufacturing (AM) process is introduced to fabricate in situ consolidated continuous fibre-reinforced polycarbonate. Specimens with three different nozzle temperatures were in situ consolidated and tested in a three-point bending test. Computed tomography (CT) is used for a detailed analysis of the local material structure and resulting material porosity, thus the results can be put into context with process parameters. In addition, a highly curved test structure was fabricated that demonstrates the limits of the process and dependent fibre strand folding behaviours. These experimental investigations present the potential and the challenges of additive manufacturing-based in situ consolidated continuous fibre-reinforced polycarbonate.

scholarly journals In situ study of microstructure in phase transformation of pipe line steel

2021 ◽  
Vol 27 (S1) ◽  
pp. 1554-1555
Author(s):  
Chen Gu ◽  
Nabil Bassim ◽  
Hatem Zurob
Keyword(s):  
Phase Transformation ◽  
In Situ Study ◽  
Line Steel ◽  
Pipe Line
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