발간년도 : [2017]
| 논문정보 |
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| 논문명(한글) |
[Vol.12, No.6] The Non-destructive Quality Test Method based on Acoustic Signal Recognition of the Tapping Object Parts |
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| 논문투고자 |
Gwang-Seok Lee |
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| 논문내용 |
The resonant acoustic method is a volumetric resonant inspection technique that measures the structural integrity of each part to detect defects, anomalies and inconsistencies on a component level. This technique automates easily. It eliminates human errors and subjectivity with fast throughput. Also it provides cost-effective inspection by minimal disruption to production and successes on the production lines of powder metal and cast parts. Resonant inspection measures the structural response of a part and evaluates it against the statistical variation from a control set of good parts to screen defects. Its volumetric approach tests the whole part, both for external and internal structural flaws or deviations, providing objective and quantitative results. This structural response is a unique and measurable signature defined by a component’s mechanical resonances. In this research, we propose a new method of the non-destructive quality test based on acoustic signal recognition. It helps to determine whether inspection object parts are defective and normal. It uses pattern recognition algorithm applicable to acoustic signal and resonant frequency analysis of the tapping sound measurement value, following of trippet tapping the surface of the inspection object parts with constant strength. We verified that it has inspection ability of the improve performance, accuracy, objective and reliability of the products through the numerical analysis processing method to the obtained data. |
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