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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Fracture: 65 Years after the Weibull Distribution and the Williams Singularity
Presentation Title Predicting Joint Strength: Evaluating Interface Corner Stress Intensity Factor and Cohesive Zone Modeling Approaches
Author(s) Earl David Reedy
On-Site Speaker (Planned) Earl David Reedy
Abstract Scope Two approaches for predicting the strength of tensile-loaded, adhesively bonded butt joints are discussed. In one approach, failure is assumed to occur when the stress intensity factor for an interface corner discontinuity reaches a critical value. Even though the stress singularity at the interface corner is less severe than a sharp crack, this analog to linear elastic fracture mechanics does successfully predict the observed dependence of joint strength on bond thickness. The second approach uses standard cohesive zone fracture analysis techniques with cohesive elements inserted along the entire interface. Calculated results show that the cohesive zone analysis predicts a joint strength that depends on the shape of the assumed traction-separation relationship and that there are any numbers of traction-separation relationships that produce the same failure load. One can, however, calibrate the cohesive zone analysis so that it also reproduces the observed variation in joint strength with bond thickness.
Proceedings Inclusion? Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Data-driven Approach to Predict Microstructurally Small Crack Evolution
A Probability Model for Stress Rupture Failure of Carbon Composites, Incorporating Weibull Fiber Strength Statistics, Local Fiber Load Sharing, and Matrix Creep
An Integrity Basis of Fracture Challenges
Applicability of Weibull Statistics for Micro- and Nano-scale Silicon Components
Comparison of Methods to Find the Weibull Stress Parameters
Composite Overwrapped Pressure Vessel (COPV) Life Test
Computational Procedure for Designing New Gen 3 Steels with High Formability and Ductile Fracture Resistance
E-42: High Temperature Cracking Damage of Calcium Aluminate Cements
E-43: On the Experimental Evaluation of the Fracture Toughness of Shape Memory Alloys
Forward Propagation of Random Microstructural Features for Reliability Estimates of Engineering Structures
Fracture Behavior of High Performance Sheet Steel
Fracture Toughness of Silicon by Variable Temperature Micropillar Splitting
Grain and Sub-grain Level Strains ahead of an Evolving Fatigue Short Crack as Measured by X-ray Techniques
K-dominance of Atomistic Cracks
Limitations and Applicability of LEFM to Spalling Fracture in Single Crystal Semiconductors
NASA's Plan for Development and Transition of Computational Materials-based Capabilities for Next-generation Durability / Damage Tolerance and Additive Manufacturing
On the Prediction of Failure in 6016 Aluminum Alloy Sheet by GISSMO Damage Model
Physical and Computational Aspects of Engineering Damage Mechanics
Predicting Joint Strength: Evaluating Interface Corner Stress Intensity Factor and Cohesive Zone Modeling Approaches
Re-tooling the Engineering Predictive Practices for Durability and Damage Tolerance
Singularities of Dynamic Cracks
Size, Temperature, Environmental Effects on Brittle Fracture (BDT)
The Complexity of Ductile Fracture
The Effect of Loading Rate on Fracture Toughness of Low Ductility Materials
Toughness, Roughness and Crack Path Engineering for Improved Ductile Fracture Resistance
Trends in Microstructure-sensitive Computational Approaches to Fatigue Cracking
Use of Weibull Distribution to Characterize High Performance Fibers
Using R-curves to Predict Fatigue Behavior in Crack Bridging Toughened Ceramics
Void Initiation during Ductile Rupture of Pure Metals
Weibull Analysis of High Strength Ni- and Fe-based Bulk Metallic Glasses

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