Home » KnowledgeCenter » Guidelines » Force calculations
If the geometry of the sample and the wire length are known the resultant angles and forces on the bonds during wire pull can be determined. If the wire length L is unknown, it can be calculated from the loop height.
The general equation is as follows:
If there is no height difference between the first and second bond and the pulltest is performed mid span, the equation can be simplified to:
If you want to pull with a specific angle θ at the first bond, calculate the test position along the wire according to the following formula.
You can use the same equation to calculate d1 for the second bond by making h2 negative. Φ then becomes θ and d1 is measured from the second bond.
The angle at the second bond Φ is derived from this expression.
If you want to pull with equal angles (θ=Φ), the following formulas apply.
The forces t, p and s then are as follows.
Local support and parts, global presence, world-class testers
J.F. Kennedylaan 14b5981 XC PanningenThe Netherlands
Schäferei 1806237 LeunaOT GünthersdorfGermany
72/7 M.12 Soi. SoonthornwipakBangpla, Bangphli,10540 Samut PrakanThailand
No. 157, Zhongzheng 6th St., Hukou Township, Hsinchu County 303, Taiwan (R.O.C.)
Room 2012 Haichuang Mansion, No.288 Dengyun Road, High-tech district, Kunshan, Jiang Su, China
Follow us on:
© 2021 xyztec bv
Xyztec develops world-class bond testing technologies and works together with global partners to provide local support worldwide.
Dive straight into the feedback!Login below and you can start commenting using your own user instantly
If a page is not available in your language, we automatically show the default English page. Your browser is set to ENGLISH. Check your browser settings if you wish to access our website in a different language.