Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape

Recent studies on local stress fields in proximity of crack and notch tips have shown that Strain Energy Density (SED), averaged in a circular control volume surrounding the point of stress singularities, represents a reliable engineering approach for assessing the brittle fracture of several brittl...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	M. Peron [verfasserIn] SMJ. Razavi [verfasserIn] F. Berto [verfasserIn] J. Torgersen [verfasserIn] L. Marsavina [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2017

Schlagwörter:	Strain Energy Density PUR foams Tensile fracture Critical radius Fracture parameters

Übergeordnetes Werk:	In: Frattura ed Integrità Strutturale - Gruppo Italiano Frattura, 2008, 11(2017), 42, Seite 214-222
Übergeordnetes Werk:	volume:11 ; year:2017 ; number:42 ; pages:214-222

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3221/IGF-ESIS.42.23

Katalog-ID:	DOAJ06829641X

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callnumber-first	T - Technology
author	M. Peron
spellingShingle	M. Peron misc TJ1-1570 misc TA630-695 misc Strain Energy Density misc PUR foams misc Tensile fracture misc Critical radius misc Fracture parameters misc Mechanical engineering and machinery misc Structural engineering (General) Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape
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topic_title	TJ1-1570 TA630-695 Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape Strain Energy Density PUR foams Tensile fracture Critical radius Fracture parameters
topic	misc TJ1-1570 misc TA630-695 misc Strain Energy Density misc PUR foams misc Tensile fracture misc Critical radius misc Fracture parameters misc Mechanical engineering and machinery misc Structural engineering (General)
topic_unstemmed	misc TJ1-1570 misc TA630-695 misc Strain Energy Density misc PUR foams misc Tensile fracture misc Critical radius misc Fracture parameters misc Mechanical engineering and machinery misc Structural engineering (General)
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title	Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape
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title_full	Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape
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title_sort	local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape
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title_auth	Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape
abstract	Recent studies on local stress fields in proximity of crack and notch tips have shown that Strain Energy Density (SED), averaged in a circular control volume surrounding the point of stress singularities, represents a reliable engineering approach for assessing the brittle fracture of several brittle materials. It is worthy of notice that the application of SED criterion and the reliability of its results are strictly related to the proper determination of fracture parameters, i.e. the critical value of deformation energy Wc and the radius Rc of the control volume. This work presents an experimental methodology for their determination by means of notched specimens for different polyurethane densities, ranging from 100 to 651 kg/m3. Then, once obtained these critical parameters, the failure load in different types of notches and cracked specimens under mode I have been predicted. Moreover, for cracked specimens under mixed mode and mode II, the authors propose a personal approach that confirms PUR foams can be treated as brittle materials
abstractGer	Recent studies on local stress fields in proximity of crack and notch tips have shown that Strain Energy Density (SED), averaged in a circular control volume surrounding the point of stress singularities, represents a reliable engineering approach for assessing the brittle fracture of several brittle materials. It is worthy of notice that the application of SED criterion and the reliability of its results are strictly related to the proper determination of fracture parameters, i.e. the critical value of deformation energy Wc and the radius Rc of the control volume. This work presents an experimental methodology for their determination by means of notched specimens for different polyurethane densities, ranging from 100 to 651 kg/m3. Then, once obtained these critical parameters, the failure load in different types of notches and cracked specimens under mode I have been predicted. Moreover, for cracked specimens under mixed mode and mode II, the authors propose a personal approach that confirms PUR foams can be treated as brittle materials
abstract_unstemmed	Recent studies on local stress fields in proximity of crack and notch tips have shown that Strain Energy Density (SED), averaged in a circular control volume surrounding the point of stress singularities, represents a reliable engineering approach for assessing the brittle fracture of several brittle materials. It is worthy of notice that the application of SED criterion and the reliability of its results are strictly related to the proper determination of fracture parameters, i.e. the critical value of deformation energy Wc and the radius Rc of the control volume. This work presents an experimental methodology for their determination by means of notched specimens for different polyurethane densities, ranging from 100 to 651 kg/m3. Then, once obtained these critical parameters, the failure load in different types of notches and cracked specimens under mode I have been predicted. Moreover, for cracked specimens under mixed mode and mode II, the authors propose a personal approach that confirms PUR foams can be treated as brittle materials
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title_short	Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape
url	https://doi.org/10.3221/IGF-ESIS.42.23 https://doaj.org/article/5eff322759774ab7a09843d294fa6218 http://www.gruppofrattura.it/pdf/rivista/numero42/numero_42_art_23.pdf https://doaj.org/toc/1971-8993
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Local strain energy density for the fracture assessment of polyurethane specimens weakened by notches of different shape

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