Investigating Adhesives for Attaching Mirrors to Aluminium Plates OPTI 523L Individual Project by Melanie Saayman.

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Presentation transcript:

Investigating Adhesives for Attaching Mirrors to Aluminium Plates OPTI 523L Individual Project by Melanie Saayman

Adhesives Available: – Loctite 326 – Summers Optical Milbond – 3M 2216 B/A gray Ordered: – NuSil LS-6140 – Dow Corning 732, Q & (samples requested) TBD: – GE Silicones RTV566 – PR-1440 Class A (PRC-DeSoto)

Glass Samples 70 x 70 x 5.5 mm Status: Available TBD: Prepare surfaces for adhesion by grounding

Aluminium Samples 50 x 50 x 12.5 mm Status: Available TBD: – Surface preparation: Sand surfaces using sandpaper

Instron* Status: – Expected to be available in +- 2 weeks – Expect to start taking measurements during the week of April 19 th *Wilson Instruments 2000 Series Rockwell Hardness Tester

Accessories 2.5 inch Flat Anvil: Keeps the sample 90 degrees perpendicular to the indenter.

Lap Shear Tests - Background Standard lap shear specimen design [1]: Modified lap shear specimen designs to maintain axial loading [1]:

Proposed Lap Shear Test

Test Under Compression

Variables Choice of Adhesive Bond area Bond thickness

References [1] Petrie E. M., Handbook of Adhesives and Sealants pp