The linear wear test, ASTM G, reproduces the linear reciprocating motion found in many real-world tribology mechanisms. ASTM G – Designation: G – 02 Standard Test Method for Linearly Reciprocating Ball-on-Fla. ASTM G – – Download as PDF File .pdf), Text File .txt) or read online. ASTM G –

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The principal quantities of interest are the wear volumes of the contacting ball and? A flat, pin or ball tip is loaded onto a test sample with a precise weight. It is the responsibility of the user asgm this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Tests involving proprietary materials are speci? If neither procedure in 8.

Nominal friction coefficient values were obtained from chart recordings of the root-mean-square friction force. Automotive New fuel cell concept brings biological design to better electricity generation Briefs: Eight replicate tests were performed in one laboratory to evaluate the repeatability of this procedure.

Becoming Compliant with the MDRs: Report the standard deviation. Appendix X1 provides examples of the repeatability and reproducibility of Procedures A and B when applied to tests of silicon nitride ceramics. Surface roughnesses of 0. NOTE 4—Quantities which have been measured on the same lot used for fabricating wear test specimens should be distinguished from those obtained on other lots of material or handbook values and assumed to apply to the given test specimens.


As is often the case for wear tests, the within-laboratory repeatability is better than the between-laboratory reproducibility.

If procedures other than A or B are used, the report should explicitly state so, listing the conditions which are different than those described in 8. Because of the integrated 16bit external position encoder, friction can be displayed for any specific point for each pass. Pin scar measurements may be made by removing the ball specimen holder and placing the wear scar portion under a re?

NOTE 1—Certain materials could be adversely affected by cleaning in solvents. G — 02 friction forces generated during sliding. A Real-Life Case Study. Historical Version s – view previous versions of standard. For unlubricated tests, a concentrated jet of air may be used to dispel the debris from the worn area of the specimens.

The same specimen materials were tested in?

Friction coefficient is accurately measured during the test by the deflection of, the easy and quick to calibrate, load cell.

A UMT can measure Vickers hardness and can be reconfigured to a linear test setup from rotary in minutes.

Universal mechanical testers UMTs that are able to perform multiple tests in a single platform with interchangeable modules can help manufacturers meet test specifications quickly and economically. The load, stroke length, frequency of oscillation, temperature, condition of lubrication, and test duration are selected from one of the two procedures see Table. The scope of this test method does not include testing in corrosive or chemically aggressive environments. For example, it may start high then experience a transition to a lower value satm the test.


Friction force and normal force data are measured to obtain the coefficient of friction. Other tests, such as those for door handles and lock mechanisms, include evaluation of different base materials, heat treatment conditions, surface coatings, and lubricants.

Linear Wear Friction Process: A variety of shapes and con?

Linear Reciprocating (ASTM G133)

The scope of this test method does not include testing in corrosive or chemically aggressive environments. A superscript epsilon e indicates an editorial change since the last revision or reapproval. Run-in wear rates can exceed steady-state wear rates, and catastrophic transitions in wear rate can occur to end the useful life of a component.

A provision is made for applying a uniform normal force load to the contact between the ball and the?

Last previous edition approved in as G —95 e1. The height of the specimen or mount may require adjustment to ensure that this condition is ful? Two wear tests were performed on ashm Summary of Test Method 4. Linear wear f133 test reproduces the linear reciprocating motion found in many real-world tribology mechanisms. Measurement and Calculation of Wear 9. Wear test results are usually reported as the volume of material lost for the block. Deviations from the prescribed cleaning procedure are permitted, but they shall be described in the report.