This discussion focuses on calculating the bonding strength of adhesive tape, specifically when adhering a 10 kg aluminum block to a steel wall using double-sided tape. Key considerations include the yield strength of the adhesive, which varies by formulation, and the importance of consulting the datasheet for specific tapes, such as the 3M VHB tape. The tensile strength of the tape, mentioned as 40 kPa, is critical for determining whether the block will remain adhered or fall. A free body diagram is recommended as a starting point for calculations.
PREREQUISITESEngineers, product designers, and anyone involved in adhesive applications, particularly those working with bonding materials in structural or electronic contexts.
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