Charpy test

Charpy test

[′shär·pē ‚test]
(metallurgy)
An impact test to determine the ductility of a metal; a freely swinging pendulum is allowed to strike and break a notched specimen that has been laid loosely on a support; the work done by the pendulum is obtained by comparing the position of the pendulum before release with the position to which the pendulum swings after breaking the specimen.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

Charpy test

A single-blow impact test utilizing a falling pendulum which breaks a specimen, usually notched, supported at both ends.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The indirect verification of Charpy machines was added to ASTM E23 more than 50 years ago as a means to reduce the scatter of Charpy test results and ensure the correct operation and maintenance of impact machines [2].
and Ogata, S., "Effect of Carbide Size Distribution on the Impact Toughness of Tempered Martensitic Steels with Two Different Prior Austenite Grain Sizes Evaluated by Instrumented Charpy Test", Materials Transactions, 54(7): 1110-1119, 2013.
The most popular test in North America is the notched Izod test while the counterpart that seems to be currently favored in Europe is the Charpy test. They have some similarities and some distinct differences.
In each test piece a 45[degrees] notch was made to a depth of 2 mm, with a radius of 0.25 mm at the base of the notch in accordance with the specifications of the standard Charpy test (ASTM International 2005).
Charpy test on polymeric material is an impact test to a suddenly applied force, which measure the resistance to failure of a material.
In the Charpy test, a pendulum swings into a notched specimen.
The analysis of an instrumented Charpy test consists in the determination of characteristic time, force, displacement, and absorbed energy values corresponding to general yield, maximum force, initiation of unstable fracture, arrest of unstable fracture, and test termination (Fig.
To determine energy absorption, fracture toughness and fracture behavior of fibers reinforced resin, the Charpy test is used [3].
The Charpy test results clearly indicate thai we have a brittle stale of low dissipated energy during failure for the as-received samples (103 kJ/[m.sup.2]), which transforms lo a state that has a ductile characteristic with high dissipated energy (103 kJ/[m.sup.2]) when the sample is annealed above the [T.sub.g] of 147[degrees]C and quenched in an ice bath.
A 45[degrees] notch was made in each test piece, 2-mm deep, with a radius of 0.25 mm at the base of the notch in accordance with the specifications of the standard Charpy test (ASTM 2005).
From the 3-mm sections, subsize Charpy impact test specimens measuring 2.5 x l0 x 55-mm were prepared, while 10 x l0 x 55-mm standard Charpy test specimens were machined from the 12-mm sections.