ASTM D429 PDF
ASTM D determines the adhesion strength of rubber to rigid materials, such as metals. The standard requires that the testing machine conform to practices. This standard is issued under the fixed designation D ; the 1 These test methods are under the jurisdiction of ASTM Committee D11 on. This standard is issued under the fixed designation D ; the number These test methods are under the jurisdiction of ASTM Committee D11 on For.
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This test is often used to find which adhesive is best for the given rubber. Screw side-action grips provide a very simple and efficient method for holding adtm specimens in a wide range of applications.
ASTM D Rubber to Metal Adhesion Test Equipment
They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. Peel fixtures provide a condition of use to measure the bond strength between laminated surface coatings, films, packaging, and their rigid backings, as well as other bonded structures. Next Checking to see if you are a returning visitor…. Next, the test pieces should be pre-strained by pulling in a test machine to just above the d29 pre-strain and inserting a nylon block between the central metal plates to maintain the prescribed prestrain.
WaveMatrix 2 for Dynamic Testing.
The test engineer can learn more about the uniformity of the rubber coating from this visual monitoring. Method B describes a peel procedure to determine the adhesive strength between rubber materials to a metal plate or substrate.
Adjustable data acquisition rates allow the user to ensure they are capturing all the desired peaks and troughs throughout the entire test. The metal pieces are made with tabs on the backsides for gripping in the test machine.
The challenges of testing to this standard: Slippage in grips will be a big challenge in testing rubber coating of metal because coating adhesion must be strong but rubber material necks down, also called Poisson effect. It may apply to vibratory or vibration applications, although this test is not dynamic. To begin testing, place the test specimen in the jaws attached to the fixed grip with the separating edge toward the operator.
Then subject the test pieces to the chosen environmental conditions. Method H is used for determining relative bond durability between adhesives with a quadruple asym test. Test Method A helps determine the static adhesion strength of rubber to metal.
Method G of ASTM D measures the bond strength of rubber to metal components with a double shear cylindrical specimen. Repair Services and Parts. Contact Us View Accessories Catalog. How can we help you?
Contact Us View Accessories Catalog. The middle of the specimen is rubber which bonds the two cones together. Test Method C of ASTM D helps determine the adhesive strength of rubber-to-metal bonding agents when applied to conical or cone-shaped asttm. Secrets of Reliable Testing.
Apply the tension load at 2 inches per minute until the rubber either separates from the adhesive surface or until the rubber ruptures.
At the end of the test you will need to record the force vs displacement. Pneumatic grips also provide constant clamping force throughout the test to avoid specimen slippage. Email addresses can only contain letters, qstm and the following special characters: How can we help you?
ASTM D429 Rubber to Metal Adhesion Test Equipment
Rubber is typically bonded to metal during the vulcanizing or heating process, but this method is for glue or other materials that are used after the rubber is made via vulcanizing.
The data obtained indicate the strength of adhesion along a line across the width of the rubber strip being separated from a metal plate at a 90 degree angle. ASTM D determines the adhesion strength of rubber to rigid materials, such as metals.