Evaluation method of dynamic fracture toughness by the computer-aided instrumented Charpy impact testing system

1993 ◽  
Vol 55 (2) ◽  
pp. 295-312 ◽  
Author(s):  
I. Yamamoto ◽  
T. Kobayashi
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Evaluation Method ◽  
Charpy Impact ◽  
Dynamic Fracture Toughness ◽  
Impact Testing ◽  
Testing System ◽  
Computer Aided ◽  
Charpy Impact Testing

Toughness Assessment of a Variety of Materials: Similarities and Discrepancies

2004 ◽  
Vol 449-452 ◽  
pp. 13-18
Author(s):  
Toshiro Kobayashi
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Dynamic Fracture Toughness ◽  
Impact Testing ◽  
Testing System ◽  
Loading History ◽  
Deflection Curve ◽  
Precracked Specimen ◽  
The World ◽  
Load Deflection Curve

To determine the toughness of materials, Charpy V notch test has been widely utilized over the world. This method is easy to conduct, but obtained values are some what qualitative. Instrumented test has also a long history and gives us a loading history during impact. However this method is also still remaining in the range of a screening test. The author has successfully developed CAI (Computer Aided Instrumented Impact Testing) System for the evaluation of dynamic fracture toughness. In this CAI system, dynamic fracture toughness parameters such as Kd, Jd, Tmat and various absorbed energies can be obtained from the load-deflection curve of a single precracked specimen for both ductile and brittle materials

scholarly journals The Charpy Impact Test of Rock (2nd Report)-Dynamic Fracture Toughness-

2006 ◽  
Vol 18 (1/2) ◽  
pp. 15-20
Author(s):  
Mitsumasa FURUZUMI ◽  
Fumio SUGIMOTO ◽  
Tadao IMAI ◽  
Naoto KAMOSHIDA ◽  
Masayoshi ABE
Keyword(s):  
Fracture Toughness ◽  
Dynamic Fracture ◽  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Dynamic Fracture Toughness

Design of a Digitalized Testing System for Simple Beam Charpy Impact Testing Machine

2012 ◽  
Vol 430-432 ◽  
pp. 1536-1541
Author(s):  
Yong Zheng ◽  
Jin Li Wang ◽  
Yuan Wei Ye ◽  
Jing Jiao ◽  
Gang Wang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Testing Machine ◽  
Charpy Impact ◽  
Configuration Software ◽  
Impact Testing ◽  
Testing System ◽  
Rotary Encoder ◽  
Impact Testing Machine ◽  
Charpy Impact Testing ◽  
Excel Format

In order to facilitate the recording, displaying and computer statistical analyzing of experimental data, digitalizing modifications were made on the testing system of a simple beam Charpy impact testing machine with an incremental rotary encoder, a Siemens CPU224 PLC and ForceControl Configuration Software. Hardware and software designs were made for the testing system. The improved system can automatically record impact absorbing energy and pendulum angle, real time display and print impact energy diagrams by computer, and it can also output the measure results in EXCEL format which is convenient for data analysis and processing.

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