Find AMTAS Projects

Evaluation of Parameters used in Progressive Damage Models

PI(s): John Parmigiani, Ph.D. (Oregon State University Mechanical Engineering)

Motivation and Key Issues • The matrix-compression material-model used in Abaqus for carbon fiber laminates is computationally efficient but is physically unrealistic and does not correspond to actual material behavior. Objective • Determine the conditions under which the use of this unrealistic material model causes significant errors in predictions of carbon fiber laminate response to […]

Project Status: Archived

Test Method Development for Environmental Durability of Bonded Composite Joints

PI(s): Dan Adams, Ph.D. (University of Utah Mechanical Engineering)

ASTM D 3762, ”Standard Test Method for Adhesive-Bonded Surface Durability of Aluminum (Wedge Test)” • Bonded aluminum double cantilever beam specimen is loaded by forcing a wedge between the adherends • Wedge is retained in the specimen • Assembly placed into a test environment – Aqueous environment – Elevated temperature • Further crack growth is […]

Project Status: Archived

Notch Sensitivity of Composite Sandwich Structures

PI(s): Dan Adams, Ph.D. (University of Utah Mechanical Engineering)

– Sandwich disbond test standards supporting the ongoing CMH-17 efforts for Rev. H – Evaluation of analysis used by industry for Category 2 and 3 large in-plane damage capability of sandwich structures, including complex structural loading – Development of building block test standards & related data analysis procedures to gain the structural data needed to […]

Project Status: Archived