Evaluation of oil-leakage of multi-layered resin-hose clamped with metal nipple and sleeve

2018 ◽  
Author(s):  
Kenta Matsuoka ◽  
Kazuya Okubo ◽  
Toru Fujii ◽  
Fuko Kusu ◽  
Masato Matsushita ◽  
...  
Keyword(s):  
Oil Leakage

Oil Leakage Detection in Automobile Shock Absorber using Machine Learning Classifiers

2021 ◽  
Author(s):  
Hayeon Park ◽  
Rut Diane Cuebas ◽  
Kyoung-Soo We ◽  
Sung Hoon Kim ◽  
Chang-Gun Lee
Keyword(s):  
Machine Learning ◽  
Shock Absorber ◽  
Leakage Detection ◽  
Machine Learning Classifiers ◽  
Oil Leakage ◽  
Learning Classifiers

A Rubber Bag for Liquid Cargo to Improve Ship Collision Safety

2016 ◽  
Author(s):  
Jan M. Kubiczek ◽  
Boyuan Liang ◽  
Lars Molter ◽  
Sören Ehlers
Keyword(s):  
Structural Design ◽  
Large Scale ◽  
Material Model ◽  
Tensile Tests ◽  
Additional Increase ◽  
Safety Level ◽  
Oil Leakage ◽  
Collision Safety ◽  
Reaction Forces ◽  
Ship Collision

Collisions and grounding accidents of ships, but also the failure of the hull-integrity, can lead to oil leakage. Examples are the Rena in 2011, the Hebei Spirit in 2007 and the much known accident of the Prestige in 2002. Consequently research regarding the enhancement of the structural design to increase the safety-level of ships in case of accidents is important. In this paper the use of a rubber bag as a second barrier is presented as an alternative concept to prevent oil leakage in case of accidents. The influence of the rubber bag is investigated using the example of a ship collision. A simplified tanker side structure as well as a box shaped rubber bag are analyzed with the finite element method. The material model for the rubber bag is calibrated with tensile tests to obtain the required material parameters. The reaction forces and the associated penetration depth are analyzed. The comparison is done between the structure with and without the rubber bag. For the latter, the general behavior is compared with large-scale experimental results. Furthermore an additional increase of the survivability of the ship due to the rubber bag without changing the common structural design is discussed.

Fault Tree Analysis on Hydraulic System Causing Fire of Heavy Self-Dumping Truck

2012 ◽  
Vol 619 ◽  
pp. 425-430
Author(s):  
Chang Su ◽  
Wei Jia Su
Keyword(s):  
Hydraulic System ◽  
Fault Tree ◽  
Fault Tree Analysis ◽  
Spare Parts ◽  
Mine Safety ◽  
Prevention Measures ◽  
Oil Leakage ◽  
Spare Parts Management ◽  
Safety Production ◽  
Fire Accident

The fire accident of heavy mineral self-dumping truck is one of the most serious disaster in mine safety production. Research on the reasons that cause fire accident is an important study for ensuring safety production. By analyzing three elements that constitute self-dumping truck fire accident, the characteristics and easy ignition points as well as major combustion parts of self-dumping truck fire accident, we confirm that the hydraulic system leakage is the major factor that causes fire. To find out the fault reason of hydraulic system oil leakage, we analyze the composition and working principle of self-dumping truck, establish leakage fault tree of hydraulic system. Based on logic relationships between each fault and fire, we get the following conclusion: hydraulic tubing damage is the highest probability event that causes oil leakage fault. In addition, we should pay attention to spare parts management factor, correct driving factor and equipment management factor. We also propose the prevention measures of leakage and fire

scholarly journals Oil Leakage Evaluation for Selection of Emulsion-Based Non-Curable Synthetic Polymer Rubberized Gel (ENC-SPRG) as Waterproofing Material in Underground Structures

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3816
Author(s):  
Kim ◽  
Choi ◽  
Park ◽  
He ◽  
Oh
Keyword(s):  
Property Values ◽  
Synthetic Polymer ◽  
Concrete Slabs ◽  
Environmental Damage ◽  
Test Results ◽  
Underground Structures ◽  
Oil Leakage ◽  
Daily Average ◽  
Leakage Area ◽  
Selection Of

A revised oil leakage evaluation regime is proposed in response to the oil leakage problems of emulsion-based non-curable synthetic polymer rubberized gel (ENC-SPRG) used as a waterproofing material in concrete slabs of residential underground structures. Oil leakage from ENC-SPRG can cause significant economic and environmental damage. As ENC-SPRG waterproofing material is relatively new in the global waterproofing market, a systematic quality control for ENC-SPRG products being manufactured and exported globally is currently non-existent. For the selection of optimal ENC-SPRG, six assessment parameters comprised of averaged and daily average oil leakage mass, averaged and daily average filler content settlement, oil leakage area, and oil leakage duration are proposed. Five ENC-SPRG product specimens are tested to obtain the property values of each parameter. The property values derived from the test results are compared between the tested ENC-SPRG product specimens. With the demonstration of this evaluation regime, a quantified method for a comparative assessment of ENC-SPRG type waterproofing materials is established.

The Analysis of Twin-Screw Compressor New Liquid Film Seal Structure

2012 ◽  
Vol 538-541 ◽  
pp. 694-700
Author(s):  
Jiang Ping Zhao ◽  
Fu Sheng Shi
Keyword(s):  
Lubricating Oil ◽  
Screw Compressor ◽  
Shaft Seal ◽  
Application Technology ◽  
Oil Leakage ◽  
Process Medium ◽  
Twin Screw ◽  
And Performance ◽  
Improved Design ◽  
Contact Mechanical

Shaft seal lubricating oil leakage of the J-201 Butadiene Gas Twin-screw Compressor occurs from time to time. According to the characteristics and related theories of process medium, the mechanical seal structure and pattern of Twin-screw Compressor had improved design . Using the existing auxiliary system and keeping the existing sealing structure, the non-contact mechanical sealing of process mediumprocess mediumdouble reverse crossing-groove oil film has ‘self-cleaning function’ which was applied to the screw compressor. To analysis its application technology and performance, the problem of Butadiene Gas Twin-screw Compressor shaft seal leakage had been solved.

A Numerical Study on Water Flooding in a Damaged Oil Carrier

2011 ◽  
Author(s):  
Liang-Yee Cheng ◽  
Diogo Vieira Gomes ◽  
Adriano Mitsuo Yoshino ◽  
Kazuo Nishimoto
Keyword(s):  
Numerical Study ◽  
Numerical Approach ◽  
Water Flooding ◽  
Oil Leakage ◽  
Complex Fluid ◽  
Oil Water ◽  
Moving Particle ◽  
The Stability ◽  
Fluid Solid Interaction ◽  
Interaction Problem

The objective of the present paper is to carry out numerical simulations on the coupled transient processes of oil leakage, water flooding and study of the stability in a damaged crude oil carrier. For this purpose, numerical approach based on Moving Particle Semi-Implicit (MPS) method is applied to model the complex fluid-solid interaction problem with free surface and oil-water multiphase flow. Changes on the modeling of the towing tank utilized in a previous study on oil leakage carried by the author are done to reduce the undesirable effects of the wave reflection. As a consequence, the improved results of the transient behaviors of hull motions are obtained for the cases with oil leak, as well as the final list angle and volume inside the tank in cases of water flooding. The results of the simulations show that the volume of flooded water is inversely proportional to the filling ratio. Also, the height of the opening has not significant effect on the final list and flooded volume.

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