compression test

compression test

[kəm′presh·ən ‚test]
(engineering)
A test to determine compression strength, usually applied to materials of high compression but low tensile strength, in which the specimen is subjected to increasing compressive forces until failure occurs.

compression test

On a specimen of mortar or concrete, a test to determine its compressive strength; in the US, unless otherwise specified, mortar test specimens are 2-in. cubes, and concrete test specimens are cylinders 6 in. in diameter and 12 in. high.

compression test

A maintenance test performed on a reciprocating engine to confirm the ability of the cylinders to hold the designed air pressure. A cylinder will fail a compression test if there is excessive leakage past the rings or any leak from inlet or exhaust valves.
References in periodicals archive ?
The initial part of the stress-strain curve of the last cycle in the cyclic compression test was replotted in Fig.
Finally, the parameter [alpha], which defines the pressure sensitivity of the yield stress, is calibrated from a uniaxial compression test using a similar local approach.
While the uniaxial compression test is well documented in ASTM D575, roughness and lubrication were found to affect force-deflections quite significantly.
Generally in most of the studies done on polymer characterization, where shear and extensional viscosity measurement are fairly a routine, compression test is used to characterize instantaneous behavior of material under conditions similar to that of lens compaction molding.
Ideal for new and retrofit installations, MTESTWindows is a complete tension and compression test control and reporting system.
Laboratory CBR Apparatus ,Unconfined compression test, mortorised, Variable speed - 1 no,Laboratory Unconfined Compression Test,Direct shear apparatus test, mortorised, variable speed Laboratory Direct Shear Test Apparatus,Total Station 2" ,Total Station 5" Accuracy Apparatus or Economy Model Apparatus
A uniaxial compression test is a better choice to obtain true stress-strain data at large strain since it can be globally homogeneous for the full range of deformation.
The main difficulty is to keep a homogeneous strain field in the specimen during the compression test.
In the generalized DSGZ constitutive model for a uniaxial compression test, the compressive stress [[sigma].
In comparing the results with that of Table 2, it is interesting to note that, although the compression test generates shear yielding in the blend, the activation energy of the [alpha] process compares reasonably well with that obtained by the tensile test.
Figure 15 shows a uniaxial compression test with one load-reload cycle together with theoretical predictions [TABULAR DATA FOR TABLE 2 OMITTED] obtained using both the NVE and VP models.
Aiming to reject the influence of technical reasons or technical peculiarities of testing equipment, an additional compression test was performed with rubber sample under loading velocity of 100 kPa/min.