scholarly journals Comparison of Fracture Response of Preflawed Tubes Under Internal Static and Detonation Loading

2004 ◽  
Vol 126 (3) ◽  
pp. 345-353 ◽  
Author(s):  
Tong Wa Chao ◽  
Joseph E. Shepherd
Keyword(s):  
Fracture Behavior ◽  
Crack Detection ◽  
Loading Rate ◽  
Accident Analysis ◽  
Strain Gages ◽  
Pressure Transducers ◽  
Gaseous Detonations ◽  
Fluid Properties ◽  
Detonation Loading

The role of loading rate and fluid properties in the fracture of piping under internal explosions is an important issue for designers and accident analysis. This was examined by fracture experiments on thin-walled and preflawed aluminum 6061-T6 tubes. The tubes were (1) statically loaded with oil, (2) statically loaded with nitrogen, and (3) dynamically loaded with gaseous detonations traveling at 2.4 km/s. The tubes were also instrumented with pressure transducers, crack detection gages, and strain gages. The experiments were controlled so that comparisons could be made on identical specimens. Fracture behavior was discussed along with fluid dynamics.

scholarly journals Comparison of Fracture Response of Preflawed Tubes Under Internal Static and Detonation Loading

2003 ◽  
Author(s):  
Tong Wa Chao ◽  
Joseph E. Shepherd
Keyword(s):  
Crack Detection ◽  
Strain History ◽  
Strain Gages ◽  
Pressure Transducers ◽  
Gaseous Detonations ◽  
Propagation Behavior ◽  
Significant Difference ◽  
Detonation Loading ◽  
Crack Propagation Behavior ◽  
Axial Surface

Fracture experiments were performed on thin-walled and preflawed aluminum 6061-T6 tubes. Flaws were machined as external axial surface notches. The tubes were 1) statically loaded with oil, 2) statically loaded with nitrogen, and 3) dynamically loaded with gaseous detonations traveling at 2.4 km/s. The experiments were controlled so that comparisons could be made on sets of specimens with the same material, tube and flaw geometry, nominal loading amplitude, and flange supports, with the only difference being the dynamics of the loading. It was found that there is a significant difference in crack propagation behavior for the three types of loading. In this paper, fracture behavior will be discussed along with the fluid dynamics involved. The tubes were also instrumented with pressure transducers, crack detection gages, and strain gages so that data on loading, crack propagating speeds, and strain history can be compared.

Loading rate effect on fracture behavior of fiber reinforced high strength concrete using a semi-circular bending test

2020 ◽  
Vol 240 ◽  
pp. 117681
Author(s):  
Mehran Aziminezhad ◽  
Sahand Mardi ◽  
Pouria Hajikarimi ◽  
Fereidoon Moghadas Nejad ◽  
Amir H. Gandomi
Keyword(s):  
High Strength Concrete ◽  
Fracture Behavior ◽  
Loading Rate ◽  
High Strength ◽  
Rate Effect ◽  
Bending Test ◽  
Fiber Reinforced ◽  
Strength Concrete

Organic loading rate (OLR) regulation for enhancement of aerobic sludge granulation: Role of key microorganism and their function

2019 ◽  
Vol 653 ◽  
pp. 630-637 ◽  
Author(s):  
Zhiming Zhang ◽  
Jianxiang Qiu ◽  
Ronghao Xiang ◽  
Haitian Yu ◽  
Xiangyang Xu ◽  
...  
Keyword(s):  
Loading Rate ◽  
Organic Loading Rate ◽  
Organic Loading ◽  
Sludge Granulation ◽  
Aerobic Sludge

The role of cellular instability on the critical tube diameter problem for unstable gaseous detonations

2019 ◽  
Vol 37 (3) ◽  
pp. 3545-3553 ◽  
Author(s):  
Han Xu ◽  
Xiaocheng Mi ◽  
Charles B. Kiyanda ◽  
Hoi Dick Ng ◽  
John H.S. Lee ◽  
...  
Keyword(s):  
Tube Diameter ◽  
Gaseous Detonations ◽  
Critical Tube Diameter

Effects of Human Factors in Process Safety

2022 ◽  
pp. 1477-1507
Author(s):  
Gargi Bhattacharjee ◽  
Sudip Kumar Das
Keyword(s):  
Human Factors ◽  
Human Error ◽  
Organizational Factors ◽  
Near Miss ◽  
Accident Analysis ◽  
Eastern Region ◽  
Process Safety ◽  
Process Industries ◽  
Human And Organizational Factors

Accidents and near-miss accidents in chemical industries are widespread. Most of the incidents occurred due to combinations of organizational and human factors. To identify the causes for an incident of an accident analysis is needed, because it reveals the possible causes behind the accidents. Accident analysis shows the human and organizational factors that support learning from the events. Literature review shows that human error plays an important role of accidents in process industries. The chapter discusses some case studies which are received very little media publicity and also no proper assessment. At first reports on the incidents were collected from newspapers and then the place was visited to conduct an interview with local people and present and past workers with the help of the PESO (M/S Petroleum and Explosive Safety Organization, Eastern Region, Govt. of India).

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