Environmental fatigue testing of molded plastics for prosthetic heart valves

Pringle, Oran Allan; Harker, R. J.

doi:10.1007/bf02326566

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…It is well known that the fatigue results exhibit an important scatter. Many reasons are often given to explain such a scatter: (i) material property heterogeneities, (ii) manufacturing process generating surface defects, (iii) testing control procedures, (iv) geometrical dispersion, (v) geometrical device defects, (vi) experimental conditions [25,33,34]. In case of LCF involving plasticity mechanism, the present study shows that some coupling between the heterogeneity of the cumulative dissipation distribution and material properties may affect the fatigue results.…”

Section: Cumulative Damagementioning

confidence: 84%

Applying infrared thermography to study the heating of 2024-T3 aluminium specimens under fatigue loading

Pastor

Balandraud

Grédiac

et al. 2008

Infrared Physics & Technology

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Section: Cumulative Damagementioning

confidence: 84%

Applying infrared thermography to study the heating of 2024-T3 aluminium specimens under fatigue loading

Pastor

Balandraud

Grédiac

et al. 2008

Infrared Physics & Technology

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“…Historically, EM has demonstrated a strong presence in materials science, but only recently has the subject of biomaterials and the subsequent study of their mechanics gained notable popularity in the journal. Representative early publications in EM described the characteristics of folded plastics as potential materials for heart valve replacements [107,108]. In 1997, Veazie et al investigated the viscoelastic behavior of IM7/K3B composite, a high performance thermoplastic material with potential as a future biomedical implant.…”

Section: Biomaterialsmentioning

confidence: 99%

The Evolution of the Field of Biomechanics Through the Lens of Experimental Mechanics

Grande-Allen

2010

Exp Mech

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Biomechanics is a young field that entails the study of the mechanical aspects of the life and health sciences. The growth of this field can be attributed to the growth of cutting-edge technologies that enable scientists to investigate the mechanics of life with increasing acuity. Founded in 1961, the journal Experimental Mechanics (EM) has had an important role in the growth and scholarship of the field of biomechanics. From the mid-1960's to mid-1970's, relevant publications in EM focused on characterizing potential bioimplants and exploring the mechanical properties of connective tissues. The next two decades witnessed a clear drop in biomechanics papers in EM, perhaps due to the rise of biomechanics-specific societies and journals that offered a more dedicated audience while EM sought a more varied readership. More recently, there has been a resurgence of biomechanics publications in EM, including 3 recent special issues devoted to the subject. The journal has brought forth an impressive range of biomechanics related papers including cellular and nanoscale studies, characterization of biological tissues and novel biomaterials, and most importantly, the development of novel technologies and devices that are applicable across the entire field. Digital image correlation and digital volume correlation are examples of techniques presented in EM that have been applied to numerous biomechanics problems. Although the field has exhibited exponential growth in the past 15 years, a myriad of scientific questions, especially on the cellular and subcellular level, remain to be answered. EM should cultivate its future role in shaping this exciting field.

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“…Therefore, to gain accurate numerical results so as to make comparison with the experimental data, mechanical property tests for major model members are necessitated. Previous studies [67] have shown that the dynamic modulus of elasticity ( ) of a polymer may not be equal to its static modulus, hence, a test for the dynamic elastic modulus…”

Section: Mechanical Property Tests Of Model Membersmentioning

confidence: 99%

Theory and experimental verification of a resultant response-based method for assessing the critical seismic excitation direction of curved bridges

Feng

Deng

Lao

et al. 2020

Engineering Structures

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Previous studies have shown that the seismic incidence angle imposes a non-negligible impact on the seismic performance of curved bridges. The computational efficiency of some current methods for determining the critical angle needs to be improved and their applicability in practical engineering projects remains to be examined. For this reason, a resultant response-based (RRB) method is developed herein for assessing the critical excitation direction of curved bridges. To validate the feasibility of this method in an actual seismic design context, a 1/62.5-scale model of a three-span curved bridge is designed and a multi-angle shaking table test is implemented. Meanwhile, the finiteelement model of the test specimen is set up, and the RRB method as well as the linear responsehistory analysis (LRHA) are comparatively assessed. The results indicate that the RRB method can

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Environmental fatigue testing of molded plastics for prosthetic heart valves

Cited by 7 publications

References 4 publications

Applying infrared thermography to study the heating of 2024-T3 aluminium specimens under fatigue loading

Applying infrared thermography to study the heating of 2024-T3 aluminium specimens under fatigue loading

The Evolution of the Field of Biomechanics Through the Lens of Experimental Mechanics

Theory and experimental verification of a resultant response-based method for assessing the critical seismic excitation direction of curved bridges

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