Evaluation of Mechanical Properties of Solid Propellants in Rocket Motors by Indentation Technique

2015 ◽  
Vol 41 (2) ◽  
pp. 281-285 ◽  
Author(s):  
Nettula Pandarinath Rao ◽  
Chetan Solanke ◽  
Bipin Kumar Bihari ◽  
Praveen Prakash Singh ◽  
Bikash Bhattacharya
Keyword(s):  
Mechanical Properties ◽  
Solid Propellants ◽  
Rocket Motors ◽  
Indentation Technique

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

Recent Advances in Mechanical Properties Evaluation of Solid Propellants

1964 ◽  
Vol 37 (2) ◽  
pp. 542-556 ◽  
Author(s):  
James H. Wiegand
Keyword(s):  
Mechanical Properties ◽  
Stress Analysis ◽  
Elastic Analysis ◽  
Solid Propellants ◽  
Metallic Structures ◽  
Temperature Regimes ◽  
Nonlinear Stress ◽  
Analytical Correlation ◽  
Wide Variability ◽  
Higher Temperature

Abstract Methods of mechanical properties measurement have become more sophisticated as the necessities of nonlinear stress analysis have been appreciated. The linear cases, typical of low temperature failure, have been successfully handled by elastic analysis, but the nonlinear complexities of the higher temperature regimes require analytical correlation of real properties and analytical methods of using such correlations. The wide variability of mechanical properties observed in solid propellants requires that predictions of failure be based on estimates of upper and lower expected limits rather than viewing failure as a point value, as is often done in stress analysis of metallic structures.

Measurement of Weld Mechanical Properties Using an Instrumented Indentation Technique

2017 ◽  
Vol 754 ◽  
pp. 383-386
Author(s):  
Kee Nam Song
Keyword(s):  
Mechanical Properties ◽  
Heat Affected Zone ◽  
Weld Zone ◽  
Base Material ◽  
Metal Structure ◽  
Instrumented Indentation ◽  
Welded Structures ◽  
Indentation Technique ◽  
Lower Confidence ◽  
Welded Structure

Different microstructures in the weld zone of a metal structure including a fusion zone and a heat affected zone, are formed as compared to the base material. Consequently, the mechanical properties in the weld zone are different from those in the base material to a certain degree owing to different microstructures and residual welding stresses. When a welded structure is loaded, the mechanical behavior of the welded structure might be different from the case of a structure with homogeneous mechanical properties. It is known that obtaining the mechanical properties in the weld is generally difficult owing to the narrow regions of the weld and interfaces. As an alternative way to obtain the weld mechanical properties, the weld mechanical properties of Alloy800HT, SUS316L, and Alloy617, were recently measured using an instrumented indentation technique, and the representative weld mechanical properties of these materials were estimated with a 95% lower confidence level for later structural analyses of the welded structures.

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

scholarly journals Effect of Weld Properties on the Crush Strength of the PWR Spacer Grid

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Kee-nam Song ◽  
Sang-hoon Lee
Keyword(s):  
Mechanical Properties ◽  
Material Properties ◽  
Structural Component ◽  
Weld Zone ◽  
Base Material ◽  
Instrumented Indentation ◽  
Spacer Grid ◽  
Indentation Technique ◽  
Weld Properties ◽  
Crush Strength

Mechanical properties in a weld zone are different from those in the base material because of different microstructures. A spacer grid in PWR fuel is a structural component with an interconnected and welded array of slotted grid straps. Previous research on the strength analyses of the spacer grid was performed using base material properties owing to a lack of mechanical properties in the weld zone. In this study, based on the mechanical properties in the weld zone of the spacer grid recently obtained by an instrumented indentation technique, the strength analyses considering the mechanical properties in the weld zone were performed, and the analysis results were compared with the previous research.

Study of mechanical properties of light-emitting polymer films by nano-indentation technique

2005 ◽  
Vol 477 (1-2) ◽  
pp. 111-118 ◽  
Author(s):  
Kaiyang Zeng ◽  
Zhi-Kuan Chen ◽  
Lu Shen ◽  
Bin Liu
Keyword(s):  
Mechanical Properties ◽  
Polymer Films ◽  
Light Emitting ◽  
Nano Indentation ◽  
Indentation Technique
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