Read e-book online Composite Materials and Joining Technologies for Composites, PDF

By Srinivasan Arjun Tekalur, Andy VanderKlok (auth.), Eann Patterson, David Backman, Gary Cloud (eds.)

ISBN-10: 1461445523

ISBN-13: 9781461445524

ISBN-10: 1461445531

ISBN-13: 9781461445531

Composite fabrics and the 1st overseas Symposium on becoming a member of applied sciences for Composites, quantity 7: complaints of the 2012 Annual convention on Experimental and utilized Mechanics represents one in every of seven volumes of technical papers awarded on the Society for Experimental Mechanics SEM twelfth foreign Congress & Exposition on Experimental and utilized Mechanics, held at Costa Mesa, California, June 11-14, 2012. the total set of lawsuits additionally comprises volumes on Dynamic habit of fabrics, demanding situations in Mechanics of Time -Dependent fabrics and tactics in traditional and Multifunctional fabrics, Imaging equipment for Novel fabrics and hard purposes, Experimental and utilized Mechanics, Mechanics of organic platforms and fabrics and, MEMS and Nanotechnology.

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Extra info for Composite Materials and Joining Technologies for Composites, Volume 7: Proceedings of the 2012 Annual Conference on Experimental and Applied Mechanics

Sample text

Different functional groups on the glass surface have different polarity. Yet, we did not observe a significant difference in the water droplet contact angle measurements for the various surface treatments. Literature shows the contact angle is sensitive to both the reaction condition and also to the molecular topology [4]. It is a complex phenomenon affected by many factors and not directly related to the interfacial bonding properties, which is of greatest interest here. Nevertheless, it is a useful way to qualitatively evaluate the repeatability of surface treatment.

Sample sizes were chosen to accommodate for shear strength tests under tension (Fig. 2). Microscopic observations were made before subjecting the samples for destructive testing. Non-destructive testing on the welded samples was done using XRD. Diffraction was performed with Cu–Ka radiation at tube parameters of 40 kV/40 mA using a Bruker D8 Discover XRD2 micro-diffractometer equipped with the General Area Diffraction Detection System (GADDS) and Hi-Star 2D area detector. 02 resolution. 5 mm position accuracy.

When tested for their tensile lap joint shear strength, the samples exhibited a brittle failure in comparison with adhesives. 4 mm2 area. Laser welded lap joints exhibited the highest strength of 22 MPa in tension. However, the sample failed in a brittle fashion under bending. Micrographs of the laser welded regions of sample set-A are presented in Fig. 7. In the pulsed laser welded sample shown in Fig. 7a, there are traces of visible thermal ablation. This process occurs as a result of surface vaporization caused by a localized increase in temperature.

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Composite Materials and Joining Technologies for Composites, Volume 7: Proceedings of the 2012 Annual Conference on Experimental and Applied Mechanics by Srinivasan Arjun Tekalur, Andy VanderKlok (auth.), Eann Patterson, David Backman, Gary Cloud (eds.)


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