The discussion revolves around calculating the bonding strength of adhesive tape, specifically in the context of adhering a 10 kg aluminum block to a steel wall using double-sided tape. Participants explore the mathematical approaches and considerations involved in determining the bonding force between the tape and both the wall and the block.
Participants express varying levels of uncertainty regarding the mathematical approach to calculating bonding strength. While some suggest referring to the datasheet for specific values, others highlight the complexity and variability of adhesive properties, indicating that no consensus on a straightforward calculation method exists.
Limitations include the variability of adhesive yield strength across different formulations and the dependence on specific conditions outlined in the datasheet. The discussion does not resolve the mathematical steps necessary for calculating bonding strength.
Actually i was wanting to know the maths for how to do calculations for such a problemberkeman said:Is that not in the datasheet for the tape?
BTW, be sure to check the operating temperature range of the 2-sided tape. I recently almost made a giant error using standard 3M 2-sided sticky tape for an electronics application. The standard tape is only good for something like 10C to 50C. I did finally find some wide temperature range 2-sided tape (3M VHB)...
I'm not sure there is a simple mathematical approach. The yield strength of the adhesive varies so much from formulation-to-formulation... Is there anything on the datasheet about the bonding strength? I can go check the datasheet for the VHB tape I'm using now...Shady99 said:Actually i was wanting to know the maths for how to do calculations for such a problem
Say the tensile strength of my tape is 40 kpa...how to know if the block will stick onto or fall?berkeman said:See the section on "Typical Performance Characteristics" mid-way down the datasheet:
https://multimedia.3m.com/mws/media/67100O/3mtm-vhb-tapes.pdf