Echrif, Salah B. M.

Hrairi, Meftah

Rizal, Mohd Shah

The International Islamic University Malaysia Repository

Automatic magnetic particle system for inspection: performanceChapter 26Performance ofan Automatic Magnetic Particle Inspection ofAutomotive PartsMeftah Hrairi, Mohd Shah Bin Rizal, Salah EchrifDepartment of Mechanical Engineering, Faculty ofEngineering,International Islamic University MalaysiaIntroductionIn the trend towa~ improvement of quality assurance, billions of parts per year arenondestructively tested for surface cracks in the automotive industry. This puts a lot of stresson both the automotive components manufacturing process and the human inspectors. Inorder to streamline the entire automotive components production system and to relieveinspector stress, it is necessary to inspect the components automatically based on computervision systems [1]. An automated MPI system, much faster and more effective because itbecame a real-time system, has been developed [2]. In this system there are two subsystems,the software and the hardware. The hard\vare consists of an automation system that isresponsible for movement of the camera, rotation of the tested work pieces and application ofthe magnetic particles. All of this mechanism will be controlled in automatic sequences bythe software. The software system consists of the image processing algorithm and the controlsoftware which controls all the hardware movements [3]. The performance of the new MPIsystem will be discussed and results ofcomparisons to the previous system will be shO\\TI.System PerformancePerformance of Rotating CIa mper SystemTo observe the performance of the rotating damper, the specimen is divided into four partsdiametrically; with each region being 90 degrees in angle. In this application, the diameter ofthe specimen is set within a range from minimum 15mm to maximum 100mm. The ranging isselected based on the field of vie\\' that the CCD camera can provide. For the experiment, acamshaft of 35mm in diameter is selected as a specimen. The time is taken region by regionin sequence with the direction of rotation of the specimen (Figure 1). It is noted that theclampers rotate at constant speed. During MPI, the rotation of specimen is taken region byregion, from region 1 to region 4. For simplification, each 90° region is marked by color ofgreen, blue, red and yellow respectively.166

Performance of an automatic magnetic particle inspection of automotive parts

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Performance of an automatic magnetic particle inspection of automotive parts

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