Opening book details…
Can I read Pressure-sensitive ductile layers – I. Modeling the growth of extensive damage on EtoBox?
Pressure-sensitive ductile layers – I. Modeling the growth of extensive damage by H.B. Chew; T.F. Guo; L. Cheng is a Engineering article available to read on EtoBox.
What is Pressure-sensitive ductile layers – I. Modeling the growth of extensive damage about?
Polymeric adhesives sandwiched between two elastic substrates are commonly found in multi-layers and IC packages. The non-elastic deformation and flow stress of such adhesive joints are highly pressure-sensitive. In this work, we study the effects of pressure-sensitivity, a, and plastic dilatancy, b, on void growth and coalescence ahead of a crack in ductile adhesive joints. To this end, a single layer of discrete voids is placed ahead of the crack in a pressure-sensitive dilatant adhesive sandwiched between two elastic substrates. The adhesive joint is subjected to small-scale yielding conditions. Using an associated flow rule (a = b), we show that pressure-sensitivity not only intensifies damage levels but also increases its spatial extent several fold. The damage level as well as its spatial extent is found to be even greater when a non-associated flow rule (b < a) is deployed. A reduction in the damage process zone's thickness further increases the voiding activity in the adhesive, thereby resulting in brittle-like failure. This work also examines the fracture toughness trends using a material failure criterion for crack growth.
Who reads Pressure-sensitive ductile layers – I. Modeling the growth of extensive damage?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- H.B. Chew; T.F. Guo; L. Cheng
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0020-7683)
- Published
- 2007
- Language
- EN
- Field
- Engineering (Physical Sciences)