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Significance and Use
Apparent shear strength determined by this test method is useful for quality control and specification purposes. It is also applicable to research and development programs concerned with interlaminar-shear strength. The apparent shear strength obtained by this test method cannot be used for design purposes, but can be utilized for comparative testing of composite materials, if all failures are in horizontal shear.
It is recommended that control samples be fabricated with each research test series and that care be used to compare each set of controls with corresponding test series run at different times.
1.1 This test method covers the determination of the apparent horizontal shear strength of fiber reinforced plastic rods. The specimen is a short beam in the form of lengths of pultruded rods. This test method is applicable to all types of parallel-fiber-reinforced plastic rod samples.
1.2 This test method is primarily used for quality control and specification purposes (see 4.1).
1.3 The values stated in SI units are to be regarded as standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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. Note 1—There is no similar or equivalent ISO standard.
Note 1—There is no similar or equivalent ISO standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D618 Practice for Conditioning Plastics for Testing
E4 Practices for Force Verification of Testing Machines
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ICS Number Code 83.120 (Reinforced plastics)
UNSPSC Code 30102415(Plastic rods)
ASTM D4475-02(2008), Standard Test Method for Apparent Horizontal Shear Strength of Pultruded Reinforced Plastic Rods By the Short-Beam Method, ASTM International, West Conshohocken, PA, 2008, www.astm.orgBack to Top