The Effects of Strain Rate and Thickness on the Response of Thin Layers of Solder Loaded in Pure Shear

Author:

Gilat A.1,Krishna K.1

Affiliation:

1. The Ohio State University, Department of Engineering Mechanics, 155 W. Woodruff Avenue, Columbus, OH 43210

Abstract

A new configuration for testing thin layers of solder is introduced and employed to study the effects of strain rate and thickness on the mechanical response of eutectic Sn-Pb solder. The solder in the test is loaded under a well defined state of pure shear stress. The stress and deformation in the solder are measured very accurately to produce a reliable stress-strain curve. The results show that both the stress needed for plastic deformation and ductility increase with increasing strain rate.

Publisher

ASME International

Subject

Electrical and Electronic Engineering,Computer Science Applications,Mechanics of Materials,Electronic, Optical and Magnetic Materials

Reference5 articles.

1. Adams, P. J., 1986, “Thermal Fatigue of Solder Joints in Micro-Electronic Devices,” MSc Thesis, Massachusetts Institute of Technology, Boston, MA.

2. Enke N. F. , KilinskiT. J., SchroederS. A., and LesniakJ. R., 1989, “Mechanical Behaviors of 60/40 Tin-Lead Solder Lap Joints,” IEEE Transactions on Components Hybrids and Manufacturing Technology, Vol. 12, pp. 459–468.

3. Hawkins, S. P., Thwaites, C. J., Warwick, M. E., 1986, “Mechanical Properties of Soldered Joints to Surface Mounted Devices,” Brazing and Soldering, No. 10, pp. 4–6.

4. Guo, Z., Sprecher, A. F., and Conrad, H., 1991, “Plastic Deformation Kinetics of Eutectic Pb-Sn Solder Joints in Monotonic Loading and Low-Cycle Fatigue,” ASME WAM Symposium Mechanics of Surface Mount Assemblies, Atlanta, GA, Dec. 3–4, ASME, New York, NY.

5. Stone, K. R., Duckett, R., Muckett, S., and Warwick, M., 1983, “Mechanical Properties of Solders and Soldered Joints,” Brazing and Soldering, No. 4, pp. 20–27.

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