Teaching Documents by Tariq Islam
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Some Failure Studies realting to material Failure
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A comprehensive detail about the foundation of laying the proposal for setting up a Leaf Spring P... more A comprehensive detail about the foundation of laying the proposal for setting up a Leaf Spring Production Plant
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This report mainly focuses on the importance and analysis of two materials based on ductile–britt... more This report mainly focuses on the importance and analysis of two materials based on ductile–brittle transition temperature (DBTT) & choosing the appropriate one for the cryogenic atmosphere.
Both materials were subjected to Impact testing method at elevated and low temperature & impact energy was determined. Therefore ductile-brittle transition behaviour of material A and B was analysed.
By impact energy testing data at elevated and low temperature, the impact energy drops suddenly over a relatively narrow temperature range in material B, especially in low temperatures. On the other hand, material A has more uniform impact energy in different temperatures and its response to temperature is relatively low than the material B.
Both materials serve the purpose in higher temperatures. But as temperature lowers, material B becomes more brittle than A based on impact energies. Therefore material A should be chosen to be used in cryogenic atmosphere as it shows ductility both in high and low temperatures.
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Failure in gas pipelines can potentially cause substantial human and economic losses. This
work p... more Failure in gas pipelines can potentially cause substantial human and economic losses. This
work presents the failure analysis of a section of a steel pipeline buried underground. A
cylindrical section of this line, failed under unknown circumstances. Chemical and
mechanical characterization of the steel pipe section was performed. Optical microscopy,
optical emission spectroscopy and hardness test were performed near the failure origin site
in order to identify the morphology, surface texture & composition of the failure site. Based
on the microscopic and visual analyses, a corrosive mechanism sequence was identified as
follows: pipes outer surface was exposed to corrosive medium which initiated the corrosion
sequence. The clues were traced down and failure reasons were investigated thoroughly
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Drafts by Tariq Islam
Designing of Surface hardening
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Teaching Documents by Tariq Islam
Both materials were subjected to Impact testing method at elevated and low temperature & impact energy was determined. Therefore ductile-brittle transition behaviour of material A and B was analysed.
By impact energy testing data at elevated and low temperature, the impact energy drops suddenly over a relatively narrow temperature range in material B, especially in low temperatures. On the other hand, material A has more uniform impact energy in different temperatures and its response to temperature is relatively low than the material B.
Both materials serve the purpose in higher temperatures. But as temperature lowers, material B becomes more brittle than A based on impact energies. Therefore material A should be chosen to be used in cryogenic atmosphere as it shows ductility both in high and low temperatures.
work presents the failure analysis of a section of a steel pipeline buried underground. A
cylindrical section of this line, failed under unknown circumstances. Chemical and
mechanical characterization of the steel pipe section was performed. Optical microscopy,
optical emission spectroscopy and hardness test were performed near the failure origin site
in order to identify the morphology, surface texture & composition of the failure site. Based
on the microscopic and visual analyses, a corrosive mechanism sequence was identified as
follows: pipes outer surface was exposed to corrosive medium which initiated the corrosion
sequence. The clues were traced down and failure reasons were investigated thoroughly
Drafts by Tariq Islam
Both materials were subjected to Impact testing method at elevated and low temperature & impact energy was determined. Therefore ductile-brittle transition behaviour of material A and B was analysed.
By impact energy testing data at elevated and low temperature, the impact energy drops suddenly over a relatively narrow temperature range in material B, especially in low temperatures. On the other hand, material A has more uniform impact energy in different temperatures and its response to temperature is relatively low than the material B.
Both materials serve the purpose in higher temperatures. But as temperature lowers, material B becomes more brittle than A based on impact energies. Therefore material A should be chosen to be used in cryogenic atmosphere as it shows ductility both in high and low temperatures.
work presents the failure analysis of a section of a steel pipeline buried underground. A
cylindrical section of this line, failed under unknown circumstances. Chemical and
mechanical characterization of the steel pipe section was performed. Optical microscopy,
optical emission spectroscopy and hardness test were performed near the failure origin site
in order to identify the morphology, surface texture & composition of the failure site. Based
on the microscopic and visual analyses, a corrosive mechanism sequence was identified as
follows: pipes outer surface was exposed to corrosive medium which initiated the corrosion
sequence. The clues were traced down and failure reasons were investigated thoroughly