Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models

The mechanics of failure in a solder joint under cyclic mechanical loading is quantified and described in this paper. It is postulated that fatigue failure of the solder joint occurs through simultaneous competitive mechanisms of cyclic damage processes occurring through the bulk solder and across s...

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Main Authors:	Shaffiar, Norhashimah, Yamin, A.F.M., Loh, W.K., Tamin, M.N.
Format:	Conference or Workshop Item
Language:	English
Published:	2012
Subjects:	T Technology (General)
Online Access:	http://irep.iium.edu.my/39062/ http://irep.iium.edu.my/39062/1/EPTC__2012.pdf

id	iium-39062
recordtype	eprints
spelling	iium-390622014-12-24T12:25:12Z http://irep.iium.edu.my/39062/ Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models Shaffiar, Norhashimah Yamin, A.F.M. Loh, W.K. Tamin, M.N. T Technology (General) The mechanics of failure in a solder joint under cyclic mechanical loading is quantified and described in this paper. It is postulated that fatigue failure of the solder joint occurs through simultaneous competitive mechanisms of cyclic damage processes occurring through the bulk solder and across solder/IMC interface. Progressive damage in the bulk solder joint is described using continuum damage model while cohesive zone model simulates the fracture process of the solder/IMC interface. For this purpose, a single-solder joint assembly with Sn-4Ag-0.5Cu (SAC405) solder and SAC405/Cu6Sn5 interface is modeled using finite element (FE) method. Unified inelastic strain model (Anand’s) with optimized parameter values for SAC405 solder represents the strain rate-dependent response of the solder. Cyclic plastic work-based phenomenological continuum damage model and cyclic stress- and energy-based cohesive zone model are employed to simulate damage response of the bulk solder and solder/IMC interface, respectively. Cyclic displacement loading (Δδ = 0.003 mm, R = 0) is prescribed to the edge of the “rigid” tool. Results show that the solder/IMC interface fatigue cracking dominates the fracture process. Fatigue crack initiated at the leading edge of the solder/IMC interface on the tool side of the assembly after accumulated 18 fatigue cycles. Simultaneously, inelastic strain accumulates at the critical material point with a decreasing rate. The predicted bending stress with opposing tensile and compressive stress region shall favor shear-driven fatigue crack diagonally across the bulk solder. 2012-12 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/39062/1/EPTC__2012.pdf Shaffiar, Norhashimah and Yamin, A.F.M. and Loh, W.K. and Tamin, M.N. (2012) Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models. In: Proceedings of the 2012 IEEE 14th Electronics Packaging Technology Conference, EPTC 2012, 5th-7th Dec 2012 , Singapore.
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	T Technology (General)
spellingShingle	T Technology (General) Shaffiar, Norhashimah Yamin, A.F.M. Loh, W.K. Tamin, M.N. Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
description	The mechanics of failure in a solder joint under cyclic mechanical loading is quantified and described in this paper. It is postulated that fatigue failure of the solder joint occurs through simultaneous competitive mechanisms of cyclic damage processes occurring through the bulk solder and across solder/IMC interface. Progressive damage in the bulk solder joint is described using continuum damage model while cohesive zone model simulates the fracture process of the solder/IMC interface. For this purpose, a single-solder joint assembly with Sn-4Ag-0.5Cu (SAC405) solder and SAC405/Cu6Sn5 interface is modeled using finite element (FE) method. Unified inelastic strain model (Anand’s) with optimized parameter values for SAC405 solder represents the strain rate-dependent response of the solder. Cyclic plastic work-based phenomenological continuum damage model and cyclic stress- and energy-based cohesive zone model are employed to simulate damage response of the bulk solder and solder/IMC interface, respectively. Cyclic displacement loading (Δδ = 0.003 mm, R = 0) is prescribed to the edge of the “rigid” tool. Results show that the solder/IMC interface fatigue cracking dominates the fracture process. Fatigue crack initiated at the leading edge of the solder/IMC interface on the tool side of the assembly after accumulated 18 fatigue cycles. Simultaneously, inelastic strain accumulates at the critical material point with a decreasing rate. The predicted bending stress with opposing tensile and compressive stress region shall favor shear-driven fatigue crack diagonally across the bulk solder.
format	Conference or Workshop Item
author	Shaffiar, Norhashimah Yamin, A.F.M. Loh, W.K. Tamin, M.N.
author_facet	Shaffiar, Norhashimah Yamin, A.F.M. Loh, W.K. Tamin, M.N.
author_sort	Shaffiar, Norhashimah
title	Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
title_short	Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
title_full	Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
title_fullStr	Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
title_full_unstemmed	Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
title_sort	fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models
publishDate	2012
url	http://irep.iium.edu.my/39062/ http://irep.iium.edu.my/39062/1/EPTC__2012.pdf
first_indexed	2023-09-18T20:56:06Z
last_indexed	2023-09-18T20:56:06Z
_version_	1777410314628759552

Fatigue failure processes in pb-free solder joints using continuum damage and cohesive zone models

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