Mechanical characterization of rock materials at high strain-rate

Author(s):  
E Cadoni
2009 ◽  
Vol 23 (5) ◽  
pp. 1795-1802 ◽  
Author(s):  
Srinivasan Arjun Tekalur ◽  
Arun Shukla ◽  
Martin Sadd ◽  
K. Wayne Lee

2003 ◽  
Vol 800 ◽  
Author(s):  
J. E. Field ◽  
S. M. Walley ◽  
W. G. Proud ◽  
J. E. Balzer ◽  
M. J. Gifford ◽  
...  

ABSTRACTThis paper reviews the techniques that have been developed at the Cavendish Laboratory for the study of the mechanical and ignition properties of energetic materials.


2012 ◽  
Vol 26 ◽  
pp. 01021 ◽  
Author(s):  
E. Cadoni ◽  
A.M. Bragov ◽  
M. Dotta ◽  
D. Forni ◽  
A. Konstantinov ◽  
...  

JOM ◽  
2011 ◽  
Vol 63 (2) ◽  
pp. 53-56 ◽  
Author(s):  
Dung D. Luong ◽  
Nikhil Gupta ◽  
Atef Daoud ◽  
Pradeep K. Rohatgi

Author(s):  
Yuvraj Singh ◽  
Anirudh Udupa ◽  
Srinivasan Chandrasekar ◽  
Ganesh Subbarayan

Abstract Studies on medium to high strain-rate characterization (≥ 0.1s−1) of lead-free solder are relatively few, primarily due to the lack of available methods for testing. Prior work in literature uses Split Hopkinson Bar (SPHB) experiments for high strain-rate characterization (≥ 300s−1) [1,2], while a modified micro-scale tester is used for medium strain-rate characterization (0.005s−1 to 300s−1) [3] and an impact hammer test setup for testing in a strain-rate regime from 1s−1 to 100s−1 [4]. However, there is still limited data in strain-rate regimes of relevance, specifically for drop shock applications. In this paper, we present orthogonal metal cutting as a novel method to characterize lead-free solder alloys. Experiments are carried out using a wedgelike tool that cuts through a work piece at a fixed depth and rake angle while maintaining a constant cutting velocity. These experiments are conducted at room temperature on Sn1.0Ag0.5Cu bulk test specimens with strain-rates varying from 0.32 to 48s−1. The range of strain-rates is only limited by the ball screw driven slide allowing higher strain-rates if needed. The strains and strain-rates are captured through Particle Image Velocimetry (PIV) using sequential images taken from a high-speed camera just ahead of the cutting tool. The PIV enables non-contact recording of high strain-rate deformations, while the dynamometer on the cutting head allows one to capture the forces exerted during the cutting process. Results for the stress-strain response obtained through the experiments are compared to prior work for validation. Orthogonal metal cutting is shown to be a potentially attractive method for characterization of solder at higher strain-rates.


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