International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 03 | Mar -2017
p-ISSN: 2395-0072
www.irjet.net
FAILURE ANALYSIS OF CYLINDER HEAD VALVE SPRING IN LOCOMOTIVES MOORTHY G1, BALAKRISHNAN S2, CHITHARTHAN S3, RANJITH KUMAR V4 1PG
scholar, Department of Manufacturing Engineering, Government College of Technology, Coimbatore.
2PG
scholar, Department of Manufacturing Engineering, Government College of Technology, Coimbatore.
3PG
scholar, Department of Manufacturing Engineering, Government College of Technology, Coimbatore.
4PG
scholar, Department of Manufacturing Engineering, Government College of Technology, Coimbatore.
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released. Static analysis determines the safe stress and corresponding pay load of the helical compression spring [1]. Springs that can reserve high level of potential energy, have an undeniable role in industries. Helical spring is the most common element that has been used in car suspension system [2]. Its spread, from the manufacturing to the service sector and on to public services. What is TQM? In simple terms, it is the mutual cooperation of everyone in an organization and associated business processes to produce value-for-money products and services which meet and, hopefully, exceed the needs and expectations of customers [3]. The analysis of life quality assessment of helical coil springs. The types of springs considered are: outer spring, inner spring and stabilizers spring. Statistical process control chart was used as the main tool in the analysis [4]. Total Quality Management (TQM) is to evolve organizations’ traditional Quality Control to Quality Management, which is far more than shifting the responsibility of detection of problems from the customer to the manufacturer. TQM is an approach to improving the competitiveness, strength and flexibility of a whole organization [5].
ABSTRACT
- The main objective of the project is Analyzing the failure of spring in the cylinder head valve spring in the locomotive. Investigation on the premature failure of suspension coil spring of a locomotive, which failed within few months after being put into service, has been carried out analytically and using ANSYS software. Statistical process control chart was used as the main tool in the analysis. Failure of the composite spring assembly was analyzed by applying the forces obtained from dynamic analysis. The dynamic analysis was performed using rail at four different velocities and three different track conditions. Key words: Quality assessment, process capability, helical coil locomotive cylinder head value springs.
1. INTRODUCTION Coil springs are used on the front suspension of most modern light vehicles. Then the spring act as an elastic object used to store mechanical energy. They can twist, pulled (or) stretched by some force and can return to their original shape when the force is released. A coil spring is made from a single length of special wire, which is heated and wound on a former, to produce the required shape. The load carrying ability of the spring depends on the diameter of the wire, the overall diameter of the spring, its shape, and the spacing of the coils. Normally, helical spring failures occur due to high cycle fatigue in which the induced stress should remain below the yield strength level and also with poor material properties. Tensile stress at the surface promotes fatigue failure, and compressive stress, improve the fatigue behavior. The effect of adverse residual stresses on the surface can be reduced either by proper stress relief treatment or by giving a shot peening operation, which imparts compressive stress on the surface.
The cause-and-effect diagram for the helix and stabilizer spring deflection dysfunction
2. LITERATURE REVIEW A spring is an elastic object used to store mechanical energy. They can twist, pulled or stretched by some force and can return to their original shape when the force is
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Fig – 1: Cause-and-effect diagram
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