A test performed at a specified temperature (usually lower than ambient) to determine the behavior of materials when subjected to high rates of loading, usually in bending, tension or torsion. The quantity measured is the energy absorbed in breaking the specimen by a single blow, as in a Charpy Test.
A test using, for example, an Izod or a Charpy notched specimen to determine the toughness of the metal by measuring the energy absorbed when the test specimen is fractured by a weighted pendulum.
Impact tests are used to determine a cable's susceptibility to damage when subjected to short time duration crushing forces. The test procedure usually is defined by the rate of impact, the shape and dimension of the striking device and the force of the impact.
A test to determine the energy absorbed in fracturing a test bar at high velocity. The test may be in tension or in bending, or it may properly be a notch test if a notch is present, creating multiaxial stresses.
A method for determining behaviour of material subjected to shock loading in bending, tension, or torsion. The quantity usually measured is the energy absorbed in breaking the specimen in a single blow, as in the Charpy Impact Test, Izod Impact Test and Tension Impact Test. Impact tests also are performed by subjecting specimens to multiple blows of increasing intensity, as in the drop ball impact test, and repeated blow impact test. Impact resilience and scleroscope hardness are determined in non destructive impact tests.
A test which is intended to evaluate the brittleness, toughness, adhesion and hardness of paint films applied to metals by subjecting them to an indent impact force.
A test to measure the absorbed energy in breaking a test specimen by a single hammer strike as in Charpy Impact testing.
Measures the energy necessary to fracture or break an adhesive joint as a result of a swinging pendulum or other impact device.
Response test where the broad frequency range produced by an impact is used as the stimulus. Sometimes referred to as a bump test. See impulse response for more information.
A test for determining the resistance to shattering of a dried film by dropping a weight onto the finish.
Determination of the resistance of a material to breaking by impact. The test is measured by breaking the material by a single blow.
A test for determining the behaviour of materials when subjected to high rates of loading under conditions designed to promote fracture, usually in bending, tension or torsion. The quantity measured is the energy absorbed when the specimen is broken by a single blow.
Impact testing is used to measure the toughness of a material, corresponding to the energy necessary to cause fracture under shock loading. Low toughness is generally associated with brittle shear fracture and high toughness with ductile plastic tearing.
A test designed to give information on how a specimen of a known material will respond to a suddenly applied stress, e.g. shock. The test ascertains whether the material is tough or brittle. A notched test piece is normally employed and the two methods in general use are either the Izod or Charpy test. The result is usually reported as the energy in ft.lbs. or KJ. required to fracture the test piece.
Test designed to determine the resistance of metal to breakage by impact, usually by concentrating the applied stress to a notched specimen. (2) A test to determine the behavior of materials when subjected to high rates of loading,usually in bending, tension, or torsion. The quantity measured is the energy absorbed in breaking the specimen by a single blow, as in the Charpy or Izod.