ASTM G99 FREE DOWNLOAD

The test machine causes either the disk specimen or the pin specimen to revolve about the disk center. I've read and accept the privacy policy. In this latter case, the results cannot be compared to the ILS data Table 2. Summary of Test Method 3. Materials are tested in pairs under nominally non-abrasive conditions. We need your help!

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The principal areas of experimental attention in xstm this type of apparatus to measure wear are described. Linear measures of wear are converted to wear volume in cubic millimetres by using appropriate geometric relations. We need your help to maintenance this website. Work Item s - aztm revisions of this standard. A spiral test can be performed with constant linear speed changing rotative speed at any point for comparable friction data across the full length of the test.

ASTM G99 - 05() Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus

Summary of Test Method 3. The extent of such non-linear periods depends on the details of the test system, materials, and test conditions. NOTE 1—Wear results may differ for different orientations. Materials are tested in pairs under nominally non-abrasive conditions. Rotative wear friction test reproduces the rotational motion found in many real-world tribology mechanisms. The principal areas of experimental attention in using this type of apparatus to measure wear are described.

Rotative Wear Friction Process: By using our website you consent to all cookies in accordance with our Cookie Policy. Please fill this form, we will try to respond as soon as possible.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Rotative Wear Friction Test ASTM G99

Friction coefficient is accurately measured by the deflection of a load cell, precisely calibrated. Please help us to share our service with your friends.

The speeds down to 0. It is the responsibility of the user awtm this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

The coefficient of asgm may also be determined. Because of the integrated 16bit external position encoder, friction can be displayed for any specific position or zone for each cycle pass.

In either case, the sliding path is a circle on the disk surface. About Us Privacy Policy Contact. A ball, rigidly held, is often used as the pin specimen.

Wear rates for the sample can be calculated from 2D profile at chosen positions or from the actual full 3D profile of the entire wear track. We need asttm help! However, it must be clearly stated in any report that, while the directions and protocol in Test Method G99 were followed if truethe choices of test parameters were different from Test Method G99 values, and the test results were therefore also different from the Test Method G99 results.

G 99 — 95a Reapproved e1 Standard Test Method for Wear Testing with a Pin-on-Disk Apparatus1 This standard is issued under the fixed designation G aztm the number immediately awtm the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

The value of any wear test method lies in predicting the relative ranking of material combinations. Contact Info Brochures Publications. A number in parentheses indicates the year of last reapproval. I accept cookies More info.

As the sample starts rotating, the tip creates a rotational wear track.

Astm g99 95a

Report "Astm g99 95a". Link to Active This link will always route to the current Active version of the standard. WearSphereVolumeFrictionDensity.