Mechanical testing. Reliability analysis. Fractography. Standard test methods.
Figure 1(left): Guide to Practice for Fractography; Figure 2 (center): Single crystal silicon theta strength test specimen; Figure 3 (right): Broken glass rod showing classic fractographic markings.
Awards and Honors
Twenty-two formal documentary standards including 15 ASTM standards, 3 Military standards, and 4 ISO standards. Three NIST Standard Reference Materials for Knoop hardness, Vickers hardness, and fracture toughness, KIc. Examples are:
ASTM C 1683 (2008) "Standard Practice for Size Scaling of Tensile Strengths Using Weibull Statistics for Advanced Ceramics." This standard is the world's first standard to recommend procedures for scaling the strengths of ceramic test pieces from one configuration to another using Weibull statistics.
ASTM C 1684 (2008) "Standard Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature – Cylindrical Rod Strength." This standard is the world's first standard test method for cylindrical rod shaped ceramic test pieces.
SRMs 2100, 2100A, and 2100B. These three SRM's were the first in the world for the property fracture toughness, KIc, for any class material. This property is a fundamental measure of the brittleness of a material. They support ASTM C 1421 Standard Test Method for Fracture Toughness of Advanced Ceramics as well as several ISO standards.