James W. Foulk

Sandia National Laboratories California

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Alejandro Mota

Sandia National Laboratories California

Jakob T. Ostien

Sandia National Laboratories California

John M Emery

Sandia National Laboratories

Michael Veilleux

Sandia National Laboratories California

Brad Boyce

Sandia National Laboratories

Jonathan D Madison

Sandia National Laboratories

Kyle N. Karlson

Sandia National Laboratories California

WaiChing Sun

Columbia University

Hojun Lim

Sandia National Laboratories

Arthur A. Brown

Marshall Space Flight Center

Cooperative Institutions

Sandia National Laboratories California

158

Sandia National Laboratories

152

Office of Scientific and Technical Information

National Technical Information Service

Massachusetts Institute of Technology

Cornell University

University of Illinois Urbana-Champaign

University of Michigan–Ann Arbor

The University of Texas at Austin

Lawrence Livermore National Laboratory

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

A three-dimensional validation of crack curvature in muscovite mica

Judith Hill James W. Foulk Patrick A. Klein E. P. Chen

Experimental and computational efforts focused on characterizing crack tip curvature in muscovite mica. Wedge-driven cracks were propagated under monochromatic light. Micrographs verified the subtle curvature of the crack front near the free surface. A cohesive approach was employed to model mixed-mode fracture in a three-dimensional framework. Finite element calculations captured the crack curvature observed in experiment.

Muscovite

Wedge (geometry)

Source

Cite

Citations (4)

Notched Fatigue of Austentic Alloys in Gaseous Hydrogen

Kevin A. Nibur Paul J. Gibbs James W. Foulk Christopher W. San Marchi

Circumferentially notched specimens of several austenitic stainless steel alloys subjected to positive load ratio, load-controlled fatigue have been cycled to failure in high pressure hydrogen gas. The number of cycles to failure for a given applied stress amplitude varies among the alloys tested indicating that control of fatigue life in hydrogen environments may be attained through informed alloy selection. The number of cycles to initiate a crack does not vary significantly among the alloys tested, however the total life to failure varied by over an order of magnitude. This difference in life is attributed to variations of the stress and strain fields ahead of the blunt notch. These fields are influenced by the strength and strain hardening characteristics of each alloy and they dictate the driving force for fatigue crack growth while the crack is small.

Paris' law

Austenitic stainless steel

Hardening (computing)

10.1115/pvp2017-65978

Cite

Citations (4)

A grain-scale study of spall in brittle materials

IUTAM bookseries (2010)

James W. Foulk Tracy Vogler

Spall

Brittleness

10.1007/978-90-481-9760-6_34

Cite

Citations (0)

A path towards incorporating the physics and numerics of 304L laser weld failure.

James W. Foulk John M Emery Michael Veilleux Glen Hansen Jakob T. Ostien

Source

Cite

Citations (0)

Predicting fracture in micron-scale polycrystalline silicon MEMS structures.

Siddharth S. Hazra Maarten P. Boer Brad Boyce James Anthony Ohlhausen James W. Foulk

Designing reliable MEMS structures presents numerous challenges. Polycrystalline silicon fractures in a brittle manner with considerable variability in measured strength. Furthermore, it is not clear how to use a measured tensile strength distribution to predict the strength of a complex MEMS structure. To address such issues, two recently developed high throughput MEMS tensile test techniques have been used to measure strength distribution tails. The measured tensile strength distributions enable the definition of a threshold strength as well as an inferred maximum flaw size. The nature of strength-controlling flaws has been identified and sources of the observed variation in strength investigated. A double edge-notched specimen geometry was also tested to study the effect of a severe, micron-scale stress concentration on the measured strength distribution. Strength-based, Weibull-based, and fracture mechanics-based failure analyses were performed and compared with the experimental results.

Brittleness

Polycrystalline silicon

10.2172/990954

Cite

Citations (0)

A model for predicting the damage and oxidation dependent life of SCS-6/Ti-B21S [0]4 metal matrix composite

James W. Foulk

Matrix (chemical analysis)

Source

Cite

Citations (0)

An Examination of Anisotropic Void Evolution in Aluminum Alloy 7075