Procedure A in ASTM D , has the objective to test composite laminates double-edged. The pin in the device, creating two cutting plans, extracts a segment. ASTM D TESTING FIXTURE – PROCEDURE B. FASTENER BEARING SPECIMEN SUPPORT. Pdf icon button Download PDF. The bearing strength of a . Model No. ASTM.D – Double Shear Fastener Test Fixture. The Double Shear Fixture applies a double shear load via two loading plates secured to the.
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Note that the scope of this test method is limited to bearing and fastener failure modes.
The composite material forms are limited to continuous-fiber or discontinuous-fiber tape or fabric, or both reinforced composites for which the laminate is balanced and symmetric with respect to the test direction. Link to Xstm This link will always route to the current Active version of the standard.
A pin or fastener is inserted in the hole, the fastener being torqued sstm desired. The Procedure B f5961 may be tested in either an unstabilized no support fixture or stabilized configuration. As described in Section H-2, the SACMA fixture is much easier to use since the specimen holder is one piece, with adjustable bushings to accommodate variations in specimen thickness. The composite material forms are limited to continuous-fiber or discontinuous-fiber tape or fabric, or both reinforced composites for which the laminate is balanced and symmetric with respect to the test direction.
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ASTM D TESTING FIXTURE – PROCEDURE B
An alternate version of the test fixture shown in Figs. This simple test fixture is shown in Fig.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Active view current version of standard. A is double-shear tensile loading, B is single-shear tensile or compressive loading of a two-piece specimen, C is single-shear tensile loading of a one-piece specimen, and D is double-shear compressive loading.
The unstabilized configuration is intended for dd5961 loading and dd5961 stabilized configuration is intended for compressive loading although tensile loading is permitted. Sometimes the customer has a requirement to test non-standard specimen sizes, requiring Wyoming Test Fixtures, Inc.
Combining values from the two systems may result in non-conformance with the standard. Force range of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static tension and compression tests These dual column testers are available in both tabletop and floor standing models. The test methods are as follows. Astk at failure and hole deformation are measured.
By means of our plastic testing expertise axtm modular product design, we will help find the testing solution that is right for you. However, when fully documented in the test report, a number of test parameters may be optionally varied. Typically, Procedure D will yield slightly higher strengths than Procedure A due to the finite edge distance, ein Procedure A ; while Procedure C will yield significantly higher strengths than Procedure B due to the xstm fastener rotation and higher peak bearing stress asm Procedure B.
The end of the fixture with the spacer in place is gripped in a standard tensile wedge grip. The properties obtained from this testing standard are the ultimate bearing strength, the offset bearing strength and the stress-strain curve.
Combining values from the two systems may result in nonconformance with the standard. Link to Active This link will always route to the current Active version of the standard.
The specimen is placed on the right surface of the test fixture, aligning the hole in the end of the specimen with the hole shown in the fixture and a fastener inserted and lightly torqued. Asgm fixture is shown in Fig. The flat tang at the top of the test fixture is gripped in a wedge grip and a tensile force is applied to the lower end of the specimen.
The specimen is kept short enough to avoid buckling. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other.
The free end of the specimen is held in a second tensile asgm grip.
ASTM D5961 Double Shear Fixture for Bearing Composite Laminate | GD5961-A
The two lower components of the fixture are spread apart to permit inserting the 1. The two halves of the fixture are separated by a spacer not provided of the same thickness as the specimen being tested. Each half of the fixture is 0. Procedure B is actually a specimen support fixture and is described in Section H-1 of this product catalog. A tensile load is applied until a maximum loading astj been reached, monitoring both applied force and hole deformation, as described in the ASTM standard.
However, the flexibility of test parameters allowed by these variations makes meaningful comparison between datasets difficult if the datasets were not axtm using the same procedure and identical test parameters. Properties, in the test direction, which may be obtained from this test method include the following: Since a raised boss is present at the pin hole, the opposite end of the fixture is thicker by an equal amount so that the specimen is uniformly supported when gripped.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.