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Adhesive Meeting Results

Posted on 4/25/2013 10:55:19 AM By Sandy Niks
  

The last blog announced some adhesive meetings. This article is a follow-up with some of the results.

The SAE Adhesives and Sealants Committee met April 11. We elected a new Chairperson, updated the membership roster, and reviewed the status of standards. We also spent some time discussing the state of adhesives in general in the automotive industry – what are some of the current problems, what would be on a wish list for a new adhesive, etc.  This discussion made it clear that there are not simple solutions to these concerns, as they are the similar to concerns noted for many years. The next Committee meeting is planned for September 12; the next working meeting for May 9, where we will continue to update J243, J1524, and J1553, as well the new glass bonding test methods.

ASTM D14, Adhesives, met in Indianapolis, Indiana, April 14 – 16. Terminology was one of the first Subcommittees to meet, continuing work on terms to support the sustainability initiatives. The new ISO activity regarding tests for evaluating bonded plastic to metal assemblies was discussed and interested parties will be put in touch with the originators. (If anyone else is interested in knowing more, please let me know.) Daniel Adams, University of Utah, presented his team’s research on ASTM D3762, “Standard Test Method for Adhesive-Bonded Surface Durability of Aluminum (Wedge Test)”, commonly known as the “Boeing Wedge Test”. They are working to clarify some of the instructions in the test, as well as providing a simpler calculation for determining adherend thickness. Methods of cutting the test specimens as well as inserting the wedge to start the crack are being compared. They are also looking at test environments and how to better report failure mode. In addition, they want to provide more documentation regarding acceptance criteria, possibly as a separate standard. Once this work based on bonded aluminum has been completed, they plan to work on applying the principles of the test to bonding composites, determining the critical variables and how to control them. This will probably result in a new test to publish.

The Plastics Bonding Subcommittee, D14.40, is looking for help on preparing Precision and Bias statements for three standards being reviewed – ASTM D3163, “Standard Test Method for Determining Strength of Adhesively Bonded Rigid Plastic Lap-Shear Joints in Shear by Tension Loading”, ASTM D4501, “Standard Test Method for Shear Strength of Adhesive Bonds Between Rigid Substrates by the Block-Shear Method”, and ASTM D5868, “Standard Test Method for Lap Shear Adhesion for Fiber Reinforced Plastic (FRP) Bonding”. Please contact me if you would be interested in participating in one (or more) of these studies – or if you are a user of one or more of these standards and would have existing data that could be shared.

The next meeting of ASTM D14 is April 6-8, 2014, in Toronto, Canada. 

SAE Adhesives and Sealants Committee

ASTM D14, Adhesives



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