02743nam a2200277 a 4500 vtls000052196 KUKTEM 20251114204336.0 110323t2010 my a f m 000 0 eng d THE0007136(Local) 201906131218 hanafiah 201110041200 Fida 201107131630 VLOAD 201103230917 ida UMP TL210 .N37 2010 rs Bc. Nur Naquiah Mohammad Ali Automotive engine fault diagnosis using acoustic emission technique / Nur Naquiah Mohammad Ali Automotive engine fault diagnosis using acoustic emission technique [computer file] Kuantan, Pahang : UMP, 2010 xvi, 80 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Mechanical Engineering with Automotive Engineering) -- Universiti Malaysia Pahang - 2010 Bibliography : p. 72-74 This thesis was carried out to diagnose faults in an automotive engine using acoustic emission method. Proton Persona’s engine, which is a four cylinder engine, powered by 1.6 liters double overhead camshaft (DOHC) with two different locations (Point A and Point B) marked was used as the main test-rig. There were three tests conducted for this project, the pencil-break test, engine under idle condition and engine under fuel injector shut off condition. Pencil-break test is performed in order to check the most suitable material to be used as medium to transfer the signals. The source of the Acoustic Emission (AE) signals was from the condition where the fuel injector was shut off when the engine is running, and it was captured using AE sensor with the help from Physical Acoustic AE-win 3.1 software. For engine under idle and shut off condition, all the domain parameters (RMS amplitude, peak amplitude and energy) was processed using MATLAB software. The parameters were then compared between idle and shut off condition for each fuel injector shut off. The results shows that the different of AE parameters between Point A and Point B, where Point B shows higher value than Point A in idle condition and also under fuel injector shut off condition. During shut off condition, the RMS amplitude, peak amplitude and energy produced higher energy level compare to idle condition. This indicates defects or faults occurred. In addition, Pekan number, X was introduced as the indicator or ratio of value before fuel injector shut off to value during fuel injector shut off. Automobiles Motors Acoustic emission Acoustic emission testing 0 0 0 1 20000 20000 2019-09-04 0 TL210 .N37 2010 rs Bc. 0000054153 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 20000 20000 2019-09-04 0 CD 5092 | TL210 .N37 2010 rs Bc. 0000054154 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 355 361 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5040*5200*6500*6501*6502*9992