Multiaxial, temperature, and time-dependent (matt) failure model

Richardson, David E.; McLennan, M. L.; Anderson, G. L.; Macon, D. J.; Batista-Rodriguez, Alicia

doi:10.1080/00218460309571

Cited by 10 publications

(7 citation statements)

References 6 publications

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“…For example, Richardson et al [16] proposed and evaluated a multiaxial, time and temperature (MATT) model for an epoxy adhesive, which is based on an ellipsoidal failure envelope and is fairly accurate for temperatures between −29 • C and 46 • C for a wide range of normal and shear load combinations provided that the assembly is loaded at a constant rate. Park and Liechti [17] performed tensile and shear experiments on a urethane structural adhesive.…”

Section: Introductionmentioning

confidence: 99%

“…In literature, most studies have considered separately the influences of temperature and strain rate on the adhesive behaviour, while only a few have concerned with the combined effect of temperature and strain rate [16,17]. For example, Richardson et al [16] proposed and evaluated a multiaxial, time and temperature (MATT) model for an epoxy adhesive, which is based on an ellipsoidal failure envelope and is fairly accurate for temperatures between −29 • C and 46 • C for a wide range of normal and shear load combinations provided that the assembly is loaded at a constant rate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Temperature and Loading Rate on the Mechanical Properties of a High Temperature Epoxy Adhesive

Banea

Sousa

Silva

et al. 2011

Journal of Adhesion Science and Technology

116

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The variation of the mechanical properties of adhesives with temperature and strain rate is one of the most important factors to consider when designing a bonded joint due to the polymeric nature of adhesives. It is well known that adhesive strength generally shows temperature dependence. Moreover, in many structural applications, the applied loads can be dynamic and the design of the joint requires the knowledge of the high loading rate mechanical behaviour of the adhesive.In this study, the combined effect of the temperature and test speed on the tensile properties of a high temperature epoxy adhesive was investigated. Tensile tests were performed at three different test speeds and various temperatures (room temperature (RT) and high temperatures (100, 125 and 150 • C)). The glass transition temperature (T g ) of the epoxy adhesive investigated is approximately 155 • C. The ultimate tensile stress decreased linearly with temperature (T ) while increased logarithmically with the loading rate, which is in the accord with the Airing's molecular activation model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Loading Rate on the Mechanical Properties of a High Temperature Epoxy Adhesive

Banea

Sousa

Silva

et al. 2011

Journal of Adhesion Science and Technology

116

View full text Add to dashboard Cite

show abstract

“…of deformation, and stress=strain history. The most complete studies were conducted by ATK Thiokol for development of the multiaxial, temperature, and time-dependent (MATT) failure model [18]. The failure model stands independently from the constitutive framework required to calculate stresses within a component.…”

Section: Figure 19mentioning

confidence: 99%

Predicting the Initiation of Thermoset De-Bonding

Adolf

Chambers

Hance

et al. 2010

The Journal of Adhesion

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Napkin ring adhesion tests over a broad range of experimental conditions suggested a de-bonding mechanism for glassy thermosets associated with ''runaway'' nonlinear viscoelasticity. Finite element analyses of these tests using a high fidelity, nonlinear constitutive equation were used to identify a single, scalar metric that consistently predicted the initiation of de-bonding, a critical value of the maximum principal strain in the ''interphase'' zone. In principle, such a de-bonding metric enables evaluation of design margins in practical components.

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“…At present, there are a quadratic stress criterion (Brewer and Lagace, 1988) and other failure criteria based on the first invariant of the stress tensor and the second invariant of the deviatoric stress tensor (Dolev and Ishai, 1981, Adams et al, 1986, Richardson et al, 2003, Mahnken and Schlimmer, 2005. However, most of these criteria have unknown parameters that depend on the material properties of adhesives.…”

Section: Introductionmentioning

confidence: 99%

“…A uniform shear stress state is generated in the adhesive layer of the ring specimen subjected to torsion. That is to say, a tensile/torque test method with a napkin-ring specimen has been developed so that the parameters of the failure criterion for multiaxial stress states can be calculated from experimental results to tune the ratio of applied tension and torque (Richardson et al, 2003, Mahnken and Schlimmer, 2005, Spaggiari, et al, 2013, Teutenberg, et al, 2013. Although this method can evaluate a failure criterion without a free-edge effect, a highly accurate biaxial testing machine, which few research institutions might possess, is required.…”

Section: Introductionmentioning

confidence: 99%

Simple evaluation method of adhesive failure criterion in multiaxial stress states by uniaxial tensile tests

Iimori

Tanaka

Kimura

et al. 2018

Mechanical Engineering Journal

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We propose a simple tensile test with which to identify the parameters that constitute the failure criterion of an adhesive in a multiaxial stress state. In this paper, we define the failure criterion as the proportional limit of load-displacement curves obtained from experiments. We first introduced the failure criterion based on the first invariant of the stress tensor and the second invariant of the deviatoric stress tensor. To determine the unknown parameters of the failure criterion, two experiments were performed. The first was a tensile shear test for bonded plate structures to obtain the strength of the adhesive material in simple shear deformation and assess how the strength depends on the strain rate and adhesion layer thickness. We subsequently performed a uniaxial tensile test for circular pipe specimens bonded by the same adhesive. The pipe specimens had inclined cutting surfaces for the purpose of measuring adhesive failure points in a multiaxial stress state. Using the failure criterion with the developed tensile test, we next evaluated the adhesive strength of the pipe specimens with reference thickness of h* ~ 0.4 mm. Formulating a scale function δ as a reference of h*, we calculated the failure magnitudes of pipe specimens with different thicknesses h. As a result, we obtained the power law of δ  h −0.79 , which allows us to extend the failure criterion to different thicknesses of the adhesive layer.

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Multiaxial, temperature, and time-dependent (matt) failure model

Cited by 10 publications

References 6 publications

Effects of Temperature and Loading Rate on the Mechanical Properties of a High Temperature Epoxy Adhesive

Effects of Temperature and Loading Rate on the Mechanical Properties of a High Temperature Epoxy Adhesive

Predicting the Initiation of Thermoset De-Bonding

Simple evaluation method of adhesive failure criterion in multiaxial stress states by uniaxial tensile tests

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