Characterisation of Mechanical Properties Using Ball Indentation, Small Punch Creep and Impression Creep Methods

2017 ◽  
pp. 79-94
Author(s):  
M. D. Mathew
Keyword(s):  
Mechanical Properties ◽  
Impression Creep ◽  
Small Punch ◽  
Ball Indentation

Application of Small Punch Test to Evaluate Tensile Properties of SA213T22 Grade Boiler Steel

2015 ◽  
Vol 830-831 ◽  
pp. 191-194
Author(s):  
M. Venkateswara Rao
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Tensile Properties ◽  
Test Methods ◽  
Uniaxial Tensile ◽  
Test Results ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Aging Phenomena

Conventional tensile test methods are used for service exposed high temperature boiler tubes to evaluate the deterioration in mechanical properties such as tensile strength, yield strength and percentage elongation. The mechanical properties are required to be evaluated periodically as the boiler components undergo material degradation due to aging phenomena. The aging phenomena occurs due to continuous exposure of tubes to high temperature & pressure steam prevailing inside the tubes and high temperature exposure to corrosive combustible gases from the external surfaces within the boiler.A recent developed new technique called small punch testing has been used to evaluate the tensile properties of SA 213T22 grade steel predominantly exists in super-heater and re-heater sections of boiler. The small punch tests have been carried out on the miniature disk shaped specimens of diameter of 8.0 mm and 0.5 mm thickness extracted from both the new and service exposed tubes. Conventional uniaxial tensile tests on standard specimens from the same tube material have also been performed for comparison. The service exposed tubes showed considerable loss in mechanical properties in both the conventional and small punch test results. Correlations of tensile properties have been obtained based on the comparative analysis of both small punch and uniaxial tensile test results. Further, the study showed that an appropriate empirical relation could be generated for new and service exposed materials between both the techniques. Conventional test methods require large quantity of material removal for test samples from in-service components whereas small punch test method needs only a miniature sample extraction. This small punch test technique could also be extended to evaluate the thicker section boiler components such as pipelines and headers in the boiler as a part of remaining life assessment study. Also this technique could be a useful tool to any metallic component where large quantity of sample removal may be difficult or may not be feasible.

Investigation on mechanical properties of P92 steel using ball indentation technique

2015 ◽  
Vol 624 ◽  
pp. 92-101 ◽  
Author(s):  
Dipika R. Barbadikar ◽  
A.R. Ballal ◽  
D.R. Peshwe ◽  
J. Ganeshkumar ◽  
K. Laha ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
P92 Steel ◽  
Indentation Technique ◽  
Ball Indentation

Evaluation of the mechanical properties of SS-316L thin foils by small punch testing and finite element analysis

2015 ◽  
Vol 83 ◽  
pp. 75-84 ◽  
Author(s):  
S. Haroush ◽  
E. Priel ◽  
D. Moreno ◽  
A. Busiba ◽  
I. Silverman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Element Analysis ◽  
Small Punch ◽  
Thin Foils

Effect of aging on mechanical properties of 6063 Al-alloy using instrumented ball indentation technique

2010 ◽  
Vol 527 (6) ◽  
pp. 1590-1594 ◽  
Author(s):  
G. Das ◽  
Mousumi Das ◽  
Sabita Ghosh ◽  
Paritosh Dubey ◽  
A.K. Ray
Keyword(s):  
Mechanical Properties ◽  
Al Alloy ◽  
Indentation Technique ◽  
Ball Indentation ◽  
6063 Al Alloy
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