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Showing 1 to 10 of 10 for “"Quasi-Static Fracture"”.
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Study of layer orientation on the fracture behavior of two additively manufactured thermoset resins, A
This work examines the fracture behavior of additively manufactured (AM) thermosetting resins to enable rapid production of lightweight and functional polymeric and composite materials that can meet a wide range of applications. Specifically, the role of print orientation on the quasi-static and …
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Dual-Use Strain Sensors for Simultaneous Strain Measurement and Acoustic Source Location
… break (PLB) tests, or natural sources such as quasi-static fracture or crack propagation. This type of evaluation has significant advantages over other types of damage inspections such as liquid die penetrant, Blue Light, Eddy Current, or X-ray inspections where visual inspections, large …
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Potential-Based Fracture Mechanics Using Cohesive Zone and Virtual Internal Bond Modeling
… of nonlinear constitutive relationships along fracture surfaces is a fundamental issue in mixed-mode cohesive fracture simulations. A generalized potential-based constitutive theory of mixed-mode fracture is proposed in conjunction with physical quantities such as fracture energy, cohesive …
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Development of a punching technique for ductile fracture testing over a wide range of stress states and strain rates
… methods are not capable of predicting fracture in AHSS, leading to expensive redesign due to poor prediction of stamping and crash worthiness. Many scenarios in which fracture is a concern in automotive applications are in the range of quasi-static through intermediate strain rates (up …
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Time- and Temperature-Dependence of Fracture Energies Attributed to Copper/Epoxy Bonds
… forces, the need arises to characterize fracture energies corresponding to related, high-speed failure events. Work (or energy) is required to create new surface area—with associated dissipation events—during fracture, and this energy (for a given material system) is dependent on the …
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Fracture mechanics in the semigrand canonical ensemble
… present a novel simulation method to assess the quasi-static fracture resistance of materials. Set within a semigrand canonical Monte Carlo (SGCMC) simulation environment, an auxiliary field –the bond rupture potential– is introduced to generate a sufficiently large number of possible microstates …
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Exploration of Wood DCB Specimens Using Southern Yellow Pine for Monotonic and Cyclic Loading
… beam (DCB) as a valid means for testing Mode I fracture energy in wood adhesive bonds. Southern yellow pine (SYP) adherends were used with epoxy and phenol formaldehyde (PF) impregnated films, providing two systems with different characteristics for investigation. An adhesive penetration …
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Shear fatigue of adhesively bonded frictional interfaces in high-strength steel
… for the cohesive law are obtained from quasi-static fracture experiments on the modified napkin ring specimen. The damage state in the adhesive is shown to consist of several microstructurally small cracks of different lengths and orientations. An exponential distribution which evolves …
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Mechanical characterization and self-healing in synthetic vascularized materials
… measurement of the bulk material stiffness and fracture toughness, as well as the influence on crack propagation and the distribution of strain. As expected, the bulk stiffness decreases and strain is concentrated in regions surrounding the vascular features. The bulk fracture toughness of the …
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Self-healing of high temperature cured epoxy and composites
… first generation catalyst particles. Both quasi-static fracture and fatigue performance of a self-healing non-toughened epoxy adhesive were evaluated using the width-tapered-double-cantilever-beam (WTDCB) specimen geometry. The same healing system was then incorporated into a commercial …