The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
R. Deblieck - One of the best experts on this subject based on the ideXlab platform.
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strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way.
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Strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way. © 2005 Elsevier Ltd. All rights reserved.
Lada Kurelec - One of the best experts on this subject based on the ideXlab platform.
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strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way.
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Strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way. © 2005 Elsevier Ltd. All rights reserved.
M. Teeuwen - One of the best experts on this subject based on the ideXlab platform.
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strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way.
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Strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way. © 2005 Elsevier Ltd. All rights reserved.
H. Schoffeleers - One of the best experts on this subject based on the ideXlab platform.
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strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way.
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Strain Hardening Modulus as a measure of environmental stress crack resistance of high density polyethylene
Polymer, 2005Co-Authors: Lada Kurelec, M. Teeuwen, H. Schoffeleers, R. DeblieckAbstract:In this paper it is shown that the resistance to slow crack propagation in polyethylene can be predicted from a simple tensile measurement performed at 80 °C. It is shown that for different types of polyethylene homopolymers and copolymers the slope of a tensile curve above its natural draw ratio (i.e. strain Hardening) correlates well with the measured stress crack resistance. The data presented in this paper confirm that the slow crack resistance in polyethylene is determined by the failure of the fibrils within the craze, which is shown to be determined by the strain Hardening of a tensile curve. A material with a strong strain Hardening will reduce the strain rate and consequently the time to failure will be strongly increased. Considering the fact that the slow crack resistance of polyethylene is usually assessed by tedious and time consuming testing methods performed on the notched samples in contact with specific fluids, the findings reported in this publication offer a possibility to assess the information on slow crack propagation in much simpler and faster way. © 2005 Elsevier Ltd. All rights reserved.
R N Haward - One of the best experts on this subject based on the ideXlab platform.
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the derivation of a strain Hardening Modulus from true stress strain curves for thermoplastics
Polymer, 1994Co-Authors: R N HawardAbstract:Some problems in the measurement of stress-strain curves for thermoplastics are considered and the importance of measuring true stress-strain curves is emphasized. However, an increasing number of suitable curves have now been published of which the large majority have been found to comply with the following Gaussian equation: σtrue=Y+Gp(λ2−1λ) where σtrue is the true stress, Y is the extrapolated yield stress, GP is the strain Hardening Modulus and λ is the extension ratio. It is shown that the Considere condition for necking requires that YGP > 3 and the available results support the proposition that this is a necessary condition for necking to occur. High values of GP are observed in polymers with an extended chain conformation.
