Shear bond test

TABLE 1. Shear bond testing of surface modified polypropylene after oxyflnorination curing in mortar slurry. 

De Hoff PH, Anusavice KJ, Wang Z (1995) Three-dimensional finite element analysis of the shear bond test. Dent Mater 11(2) 126-131 Lee CH, Kobayashi S (1973) New solution to rigid-plastic deformation problems using matrix methods. Trans ASME J Eng Ind 95(3) 865-873 Lewis RW, Ravindran K (2000) Finite element simulation of metal casting. Int J Numer Methods Eng 47(l-3) 29-59 (Special Issue Richard H. Gallagher Memorial Issue)... 

EFFECT OF ELASTOMERS ON ADHESIVE PROPERTIES Single Lap Shear Bond Testing... 

The two most important specifications worldwide are the European Norms EN and the American Standards ANSI 118.1-1999. The biggest difference between the two standards is the principal test setup. The European Standards require mostly tensile bond adhesion testing where else the American Standard uses shear bond testing. The other difference is clearly the storage conditions for the specimen before testing. A listing of both standards is shown in Tab. 13-2. 

The adhesion of tiles to the substrate is certainly as important for a ceramic tile adhesive as the flexibihty. The European Norm uses a pull off test to determine the adhesion, where as the US standard ANSI 118.1 - 1999 prefers the shear bond test. A simple ceramic tile mortar with no polymer modification will fail in the adhesion test especially after heat aging or over wood (ANSI 118.11 - 1999). The same mortar modified with only 2 % of redispersible powder will pass both tests. With the puD-off... 

Table 1 contains the metal-to-metal engineering property requirements for Boeing Material Specification (BMS) 5-101, a structural film adhesive for metal to metal and honeycomb sandwich use in areas with normal temperature exposure. The requirements are dominated by shear strength tests. Shear strength is the most critical engineering property for structural adhesives, at least for the simplistic joint analysis that is commonly used for metal-to-metal secondary structure on commercial aircraft. Adhesive Joints are purposefully loaded primarily in shear as opposed to tension or peel modes as adhesives are typically stronger in shear than in Mode I (load normal to the plane of the bond) loading. 

In the shear bond strength test, the cement slurry is allowed to cure in the annulus of two concentric steel cylinders. After curing the force to break the bond between the set cement and one of the cylinders (usually the inner one)... 

Pull-out tests done with PP monofilaments having a rectangular cross section that ranges from 0.5 x 1.0 to 0.65 x 1.4 mm, indicated that oxyfluorina-tion readily doubles the shear bond strength (see Table 16.14). 

Table II. Tensile Shear Bond Strength of Adhesives from Phenolysis Lignin in Normal Test and after Repeated Boil Treatment...

In this test, multiple bond points are used and a quadruple bond test is performed. These tests are illustrated in Figure 9.5. Shear tests are specified in the following specifications ... 

Shear Strength Tests of Resin-Bonded Panels. The standard procedures for synthesizing the P/C/U/F types of resins, formulating the resins into final adhesives, and preparing and testing specimens were described previously (9,10). Two experiments that differed from the standard follow. 

Tensile shear test according to EN 302-1 (2004) [2] on bonded test samples made from beech (Fagus Sylvatica L.) ... 

Adhesive lap shear strengths of the ATS-modified LARC-13/titanium bonds tested at ambient and elevated temperatures are presented in Table 5. As was found in previous studies (Table 1), toughness has been achieved at a sacrifice to the elevated temperature strengths of the adhesives containing individual elastomers ATSj q to... 

Fig. 1. Comparison of destructive shear strength tests on laminates with the predicted strengths using a Fokker bond tester. A series of laminates is represented where the adherend thickness t varies as follows ( ), t = 0.6 mm (O), t = 0.8 mm (x), f = 1.0 mm (-h), f = 1.2 mm (A), t = 1.5 mm. To construct this standard plot, 120 specimens of Dural 2024-T3 were used 95% of all results are within the range 0.36 kg mm . (From R J Schliekelmann, Non-destructive testing of adhesively bonded joints, in Adhesion, Fundamentals and Practice, McClaren, London, 1966)...

With adhesives, therefore, the same test method may be quoted for widely differing materials and the standards are written in such a way as to take account of this. For instance, BS 5350 Part C5, the lap shear bond strength test (see Shear tests), may be nsed to determine the bond strength of adhesives of widely different cohesive strengths on substrates of widely differing nature. 

Specific tests of adhesion are described in more detail under the following articles Blister test, Climbing drum peel test, Fracture mechanics. Napkin ring test. Peel tests. Rubber to metal bonding - testing. Shear tests. Tensile tests. Wedge test and in Refs. [1-5] see also Standards for adhesives and adhesion and Appendix. 

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