The Experts below are selected from a list of 144 Experts worldwide ranked by ideXlab platform

A Almasi - One of the best experts on this subject based on the ideXlab platform.

  • Piston rod load analysis of process Reciprocating Machines
    Proceedings of the Institution of Mechanical Engineers Part E: Journal of Process Mechanical Engineering, 2009
    Co-Authors: A Almasi
    Abstract:

    AbstractA new analytical method is presented to evaluate the dynamic deformation and elastic—plastic stress and strain in a Reciprocating Machine piston rod. This new method has the ability to account for geometric non-linearity, initial rod imperfection, elastic—plastic deformation, and dynamic effects. The proposed method can be used for the evaluation of piston rod performance for various Reciprocating Machines under different operation situations. Rod load curves and the maximum allowable rod load are calculated with the proposed method for a special purpose Reciprocating compressor in a refinery critical service.

  • ECMS - Nonlinear Model For Reciprocating Equipment Piston Rod Elastic Plastic Deformation.
    ECMS 2009 Proceedings edited by J. Otamendi A. Bargiela J. L. Montes L. M. Doncel Pedrera, 2009
    Co-Authors: A Almasi
    Abstract:

    Reliability assessment of Reciprocating equipment piston rod leads to nonlinear elastic-plastic deformation analysis of rod with initial imperfection under axial dynamic load. In this paper a new and effective model and analytical simulation method are presented to evaluate dynamic deformation and elastic-plastic stress of Reciprocating Machine piston rod. This new method has capability to account for geometric nonlinearity, elastic-plastic deformation and dynamic effects. Proposed method can be used for evaluation of piston rod performance for various Reciprocating Machines under various operation situations. Rod load curves and maximum allowable rod load are calculated with presented method for a Reciprocating compressor. Useful recommendations and guidelines for rod load, rod load reversal and rod drop monitoring are also addressed.

Y. L. Su - One of the best experts on this subject based on the ideXlab platform.

  • Optimum Me-DLC coatings and hard coatings for tribological performance
    Journal of Materials Engineering and Performance, 2000
    Co-Authors: Y. L. Su
    Abstract:

    In this study, hard coatings (TiN, TiCN, CrN, and CrCN) and Me-DLC coatings (Ti_ x %-C:H and Cr_ x %-C:H) were deposited on tungsten carbide (WC) substrate by multiarc physical vapor deposition (MAPVD) and unbalanced magnetron (UBM) sputtering, respectively. Counterbodies of the AISI 1045 steel cylinder and the AA7075T651 aluminum cylinder were used in the cylinder-on-disk, line-contact wear mode under dry condition; a counterbody of the AISI 52100 steel ball was used in the ball-on-disk, point-contact wear mode, under both dry and lubricated conditions. All wear tests were conducted with a Reciprocating Machine. After the tests, the most suitable coating for various counterbodies and test environments was selected. For the coating/1045 steel cylinder, the Ti_10%-C:H coating possesses excellent tribological characteristics. For the coating/7075T651 aluminum cylinder, hard coatings display excellent wear resistance. For the coating/steel ball, CrCN and CrN coatings display very little wear under both dry and lubricated conditions. On TiN and TiCN coatings, special wear mechanisms of material transfer, adhesion wear, and fatigue fracture occurred during initial tests under kerosene lubrication.

M. Cox - One of the best experts on this subject based on the ideXlab platform.

  • A preliminary evaluation of the Groll rotary vane compressor
    International Journal of Refrigeration, 1992
    Co-Authors: I K Smith, H. R. Harrison, M. Cox
    Abstract:

    The principles of operation and design of the prototype of a novel design of vane compressor with significant advantages over the conventional sliding vane type are described. Its performance is given and compared to that of equivalent commercially available sliding vane and Reciprocating compressors used in refrigeration systems. Its volumetric efficiency on average was 3% greater than that of the sliding vane compressor and 23% more than that of the Reciprocating Machine. The adiabatic efficiency was on average 15% greater than that of the sliding vane and about equal to that of the Reciprocating compressor. Owing to its high rotational speed it is more compact than the Reciprocating compressor. Since the vanes are rigidly retained about their axis of rotation they cannot chatter as in a sliding vane compressor. It is therefore smooth and quiet in operation and no mechanical faults were encountered in 432 h of operation. ?? 1992.

Arifuzzaman - One of the best experts on this subject based on the ideXlab platform.

  • Design and performance test of a compressed air operated Reciprocating Machine
    2019
    Co-Authors: Mohammad Abdul Aziz, Muhammad Mahbubur Rashid, Arifuzzaman
    Abstract:

    Renewable energy is an environmental friendly source of energy around the world and fossil fuel sources are the main polluting factor for global climate change. The fossil fuel reserves decreased day by day which creates environmental hazardous pollutants. Fossil fuel reserved crisis leads the researchers to find out alternative sources of energy which should be alternative solution of fossil fuel energy. In this research air compressed engine which is run by compressed air by modifying a 4-stroke petrol engine (IC engine) into two stroke air compressed piston engine where air compressor acts as a fuel source. The experimental results shows a promising maximum efficiency percentages of 53.42, 35.6, 30.4, 26.67 and 23.60 under 2 to 4.5 bar pressure with maximum load condition.

Xu Wenhua - One of the best experts on this subject based on the ideXlab platform.

  • An intelligence diagnostic system for Reciprocating Machine
    1997 IEEE International Conference on Intelligent Processing Systems (Cat. No.97TH8335), 1997
    Co-Authors: Xu Wenhua
    Abstract:

    A vibration diagnostic system for a Reciprocating Machine has been developed. Its main function is to monitor operation state and to diagnose faults for the Reciprocating Machine. The software has two parts, one in a diagnostic Machine and the other in a PC. It can perform diagnosis on the spot, realize self learning and adapt to many types of Machine. It takes main factor autoregressive model as a character extractor and the ANN model as classifier. With the combination of the two technologies, the system can perform data sampling, signal analysis, character extracting and fault recognition automatically. It reduces factors involved by human beings in a diagnosis process, so the accuracy of the diagnosis and the level of intelligence and automation has been raised.