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How to crack ISRO scientist exam of mechanical? 

Displacement field
Stress intensity factor
Fracture mechanics
Crack closure
Finite element method

Answers from top 10 papers

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Papers (10)Insight
Open access•Journal Article•DOI
Extended finite element simulation of crack propagation in cracked Brazilian disc
M. Eftekhari, Alireza Baghbanan, Hamid Hashemolhosseini 
22 Feb 2015-Journal of Mining and Environment
10 Citations
The results obtained from the crack propagation examinations show that the crack angle has an important effect on the crack initiation angle.
Journal Article•DOI
A simple test for assessing solidification cracking susceptibility and checking validity of susceptibility prediction
Tayfun Soysal, Sindo Kou 
15 Jan 2018-Acta Materialia
81 Citations
Thus, the present test can be used to check the validity of predicting the crack susceptibility based on the crack susceptibility index.
Open access•Journal Article•DOI
A novel pillar indentation splitting test for measuring fracture toughness of thin ceramic coatings
Marco Sebastiani, Kurt E. Johanns, Erik G. Herbert, Fabio Carassiti, George M. Pharr 
01 Jan 2015-Philosophical Magazine
125 Citations
The main novel aspect of this work is that neither crack geometries nor crack sizes need to be measured post test.
Open access•Journal Article•DOI
3D Studies of Damage by Combined X-ray Tomography and Digital Volume Correlation☆
James Marrow, Christina Reinhard, Yelena Vertyagina, Luis Saucedo-Mora, David M. Collins, Mahmoud Mostafavi 
01 Jan 2014-Procedia Materials Science
20 Citations
These examples show how material properties can be obtained by analysis of the displacement fields, how such measurements can be used to better define the applied loading on small test specimens and how crack opening magnitude and mode may be extracted also.
Open access•Journal Article•DOI
Robust and direct evaluation of J2 in linear elastic fracture mechanics with the X‐FEM
Grégory Legrain, Nicolas Moës, Erwan Verron 
03 Dec 2008-International Journal for Numerical Methods in Engineering
10 Citations
However, this new contribution requires an accurate determination of the mechanical fields near the crack-tip.
Journal Article•DOI
Painting cracks: A way to investigate the pictorial matter
Frédérique Giorgiutti-Dauphiné, Ludovic Pauchard 
11 Aug 2016-Journal of Applied Physics
52 Citations
Precisely, the morphology of crack patterns can be related to the mechanical properties of the pictorial matter or they can reveal information about the methods used by the artist or the conditions of conservation.
Journal Article•DOI
Ultrasonic surface crack characterization on complex geometries using surface waves.
B. Masserey, L. Aebi, Edoardo Mazza 
22 Dec 2006-Ultrasonics
19 Citations
Application of the method to a specimen with a real fatigue crack shows a systematical error possibly due to the inclined crack profile.
Journal Article•DOI
Discrete element simulation of SiC ceramic containing a single pre-existing flaw under uniaxial compression
Shengqiang Jiang, Xu Li, Zhang Li, Yuanqiang Tan, Ruitao Peng, Rui Chen 
15 Feb 2018-Ceramics International
15 Citations
The results showed that the flaw inclination angle affected the mechanical properties of the specimen as well as the initiation and propagation of the first crack.
Journal Article•DOI
Multi-parameter approximation of the stress field in a cracked body in the more distant surroundings of the crack tip
Václav Veselý, Václav Veselý, Jakub Sobek, Petr Frantík, Stanislav Seitl, Stanislav Seitl 
01 Aug 2016-International Journal of Fatigue
18 Citations
The developed procedures simplify the analysis of the description of mechanical fields at a greater distance from the crack tip considerably.
Open access•Journal Article•DOI
Effect of crack closure on non-linear crack tip parameters
Fernando Antunes, T. Sousa, Ricardo Branco, Luis M. Correia 
01 Feb 2015-International Journal of Fatigue
35 Citations
It was demonstrated that: (i) LEFM concepts are applicable to the problem under study; (ii) the crack closure phenomenon has a great influence on crack tip parameters decreasing their values; (iii) the Δ K eff concept is able to explain the variations of crack tip parameters produced by the contact of crack flanks; and (iv) the analysis of remote compliance is the best numerical parameter to quantify the crack opening level.

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