The Application of Spherical Bend Testing to Predict Safe Working Manufacturing Process Strains
Published: |
January 9, 2013 |
Author: |
John McMahon P.Eng, Brian Gray P.Eng, |
Abstract: |
The increased temperatures associated with lead free processes have produced significant challenges for PWB laminates. Newly developed laminates have different curing processes, are commonly filled with ceramic particles or micro-clays and can have higher Tg values. These changes designed to reduce Z-axis expansion and improve the materials resistance to thermal excursions through primary attach and rework operations have also produced harder resin systems with reduced fracture toughness.... |
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