Analysis and Testing Division Tracks

Impact Dynamic Response


Composite materials and structures are often susceptible to impact or other dynamic loading during their lifecycles. The multi-scale nature of composites results in complex damage mechanisms and  failure behavior. In addition, the performance of composite materials can be severely degraded after impact or dynamic event, creating durability issues. This session seeks papers to address and discuss the open challenge of impact and dynamic response of composite materials, ranging from low to high-velocity and ballistic cases. Topics of interest include but not limited to: new damage-tolerant material design, novel experimental and metrology methods, non-destructive inspection techniques, advanced numerical and computational tools at high rates, physical-based analytical prediction models, post-impact damage behavior and residual strength, interlaminar reinforcement approaches, and vibration, stress or shock wave propagation in composites.


For more information, please contact one of the following:

Dr. KT Tan – The University of Akron ktan@uakron.edu

Dr. Leslie Lamberson - Colorado School of Mines les@mines.edu

Continued Airworthiness of Aircraft Structures


This session focuses on analysis methods (closed-form or finite element based) and their applications for damage/defect assessment and repair. Continued airworthiness mandates that the composite repairs for primary aircraft structures be certified to the same static and damage tolerance criteria as those for pristine design.  It is paramount that robust analytical methods be developed to enable safety while maximizing aircraft availability. Topics include but not limited to: 

1)  Bonded and Bolted Repairs

2)  Effects of Defects

3)  Allowable Damage Limits (ADL) & Repairable Damage Limits (RDL)

4)  Heat or Lightning Strike Damage

5)  Modeling for Non-destructive Evaluation (NDE)


For more information, please contact:

Dr. John Lin, Boeing Research & Technology John.Z.Lin@boeing.com

Testing & Material Characterization


With advanced modeling techniques such as progressive damage and failure, multi-scale, stochastic-based and ICME approaches, the need for rigorous testing and material characterization of composite materials has become more crucial than ever.  The goal of this topic is to seek state-of-the-art research on novel composite testing and characterization methods. Specific topics of interest include, but are not limited to: (1) novel experimental methods for materials characterization, (2) new testing methods for structural certification, and (3) novel experiments to support model validation of advanced material systems.

For more information, please contact one of the following:

Dr. Dianyun Zhang - University of Connecticut dianyun.zhang@uconn.edu

Dr. Scott Stapleton – UMass –Lowell Scott_Stapleton@uml.edu

Special Session on CALE (Joint Session with Durability & Damage Tolerance Div.)

To anticipate the need for service life extension programs, the United States Air Force Research Laboratory (AFRL) has led the investigation of emerging computational progressive damage and failure analysis (PDFA) methods for composite structure durability and damage tolerance (DaDT). Under the Composite Airframe Life Extension (CALE) program, multiple projects have examined the accuracy, efficiency, and applicability of analysis tools throughout the building block: from unnotched tension/compression, and open hole tension/compression coupons (Tech Scout 1), bearing (CALE Project 1), and filled hole compression, and bearing bypass (CALE Project 2), quantification of aging from long-term exposure (QALE), assessment of the tools at the sub-element and element level (CALE Project 4), and applications for service life extension of primary composite structures (CALE DEMO). This special session provides a selection of technical papers highlighting recent work from within the AFRL CALE Projects. 


For more information, please contact one of the following:

Jonathan Bartley-Cho, Northrop Grumman Systems Corporation jonathan.bartley-cho@ngc.com

Joe Schaefer – Boeing Research & Technology joseph.d.schaefer@boeing.com

Carl Rousseau – Lockheed Martin carl.q.rousseau@lmco.com

Other sessions organized by Analysis & Testing Division


Adhesives & Joints (Metallic and/or Composite Bonded Joints)

Certification by Analysis

Verification & Validation of Analysis Tools

Buckling and post-buckling

For more information, please contact: padmasiri.ranatunga.1@us.af.mil