Numerical Analysis of Mechanical Test Methods for Evaluating Shear Strength of Joint by Using Interface Element

2007 ◽  
Vol 345-346 ◽  
pp. 1489-1492 ◽  
Author(s):  
Hisashi Serizawa ◽  
Kazuaki Katayama ◽  
Charles Lewinsohn ◽  
Mrityunjay Singh ◽  
Hidekazu Murakawa
Keyword(s):  
Residual Stress ◽  
Shear Strength ◽  
Tensile Test ◽  
Layer Thickness ◽  
Mechanical Test ◽  
Test Methods ◽  
Bending Test ◽  
Interface Element ◽  
Initiation Point ◽  
Calculation Results

As examples of the most typical methods to determine the shear strength of SiC/SiC composite joints, the tensile test of lap joined composite and the asymmetrical four point bending test of butt joined composite were analyzed by using finite element method with the interface element. From the calculation results, it was revealed that the strength in the tensile test was strongly influenced by the residual stress as the increase of the joint layer thickness. In the case of asymmetrical bending test, it was found that the crack initiation point would move due to the residual stress and the strength was also affected by the joint layer thickness.

Numerical Analysis of Test Methods for Evaluating Shear Strength of Ceramic Composite Joints Using Interface Element

2007 ◽  
Vol 539-543 ◽  
pp. 2143-2148 ◽  
Author(s):  
Hisashi Serizawa ◽  
Charles Lewinsohn ◽  
Mrityunjay Singh ◽  
Hidekazu Murakawa
Keyword(s):  
Shear Strength ◽  
Surface Energy ◽  
Tensile Test ◽  
Test Methods ◽  
Bending Test ◽  
Interface Element ◽  
Composite Joints ◽  
Compressive Test ◽  
Composite Joint ◽  
Calculation Results

As examples of the most typical methods to determine the shear strength of SiC/SiC composite joints, the asymmetrical four point bending test of butt joined composite, the tensile test of lap joined composite and the compressive test of double-notched composite joint were analyzed by using finite element method with the interface element. From the calculation results, it was found that the shear strength in the asymmetrical bending test was controlled by both the surface energy and the shear strength at the interface regardless of their combination although the strength in the tensile test or the compressive test was governed by the surface energy when the shear strength was large. Also, it was revealed that the apparent shear strength of the composite joint obtained experimentally might be affected by the combination of the surface energy and the shear strength at the interface.

scholarly journals Anisotropy of Mechanical Properties and Residual Stress in Additively Manufactured 316L Specimens

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7176
Author(s):  
Alexey Fedorenko ◽  
Boris Fedulov ◽  
Yulia Kuzminova ◽  
Stanislav Evlashin ◽  
Oleg Staroverov ◽  
...  
Keyword(s):  
Residual Stress ◽  
Tensile Test ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Mechanical Test ◽  
Test Methods ◽  
Test Results ◽  
Initial Stage ◽  
Anisotropy Of Mechanical Properties

In the presented study, LPBF 316L stainless steel tensile specimens were manufactured in three different orientations for the analysis of anisotropy. The first set of specimens was built vertically on the build platform, and two other sets were oriented horizontally perpendicular to each other. Tensile test results show that mean Young’s modulus of vertically built specimens is significantly less then horizontal ones (158.7 GPa versus 198 GPa), as well as yield strength and elongation. A role of residual stress in a deviation of tensile loading diagrams is investigated as a possible explanation. Simulation of the build process on the basis of ABAQUS FEA software was used to predict residual stress in 316L cylindrical specimens. Virtual tensile test results show that residual stress affects the initial stage of the loading curve with a tendency to reduce apparent Young’s modulus, measured according to standard mechanical test methods.

Numerical Analysis of Mechanical Test Methods for Evaluating Shear Strength of Joint by Using Interface Element

2007 ◽  
pp. 1489-1492
Author(s):  
Hisashi Serizawa ◽  
Kazuaki Katayama ◽  
Charles A. Lewinsohn ◽  
Mrityunjay Singh ◽  
Hidekazu Murakawa
Keyword(s):  
Shear Strength ◽  
Numerical Analysis ◽  
Mechanical Test ◽  
Test Methods ◽  
Interface Element

A Critical Review on Modeling of Fracture Behavior of Ceramic Joints

2014 ◽  
Vol 88 ◽  
pp. 121-130
Author(s):  
Hisashi Serizawa ◽  
Hidekazu Murakawa
Keyword(s):  
Shear Strength ◽  
Surface Energy ◽  
Tensile Test ◽  
Compression Test ◽  
Fracture Morphology ◽  
Specimen Geometry ◽  
Bending Test ◽  
Interface Element ◽  
Four Point Bending ◽  
Composite Joint

As examples of the most typical methods to determine the shear strength of SiC/SiC composite joints, the asymmetrical four point bending test of a butt-joined composite, the tensile test of a lap-joined composite, and the compression test of a double-notched composite joint were analyzed by using a finite element method with the interface element. From the results, it was found that the shear strength in the asymmetrical bending test was controlled by both the surface energy and the shear strength at the interface regardless of their combination while the strength in the tensile test or the compression test was governed by the surface energy when both the surface energy and the shear strength were large. In addition, the interface element was employed in order to examine the influence of the specimen geometry on the microstructural fracture morphology in nanoSiC/SiC composite during a miniaturized Double Notch Shear (DNS) test. From the serial computations, it is revealed that a relationship between the inter-laminar shear strength and the yield stress seems to be very important for selecting appropriate specimen geometry of the miniaturized DNS test.

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