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A combined synthetic and np scheme for detecting increases in fraction nonconforming

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : A combined synthetic and np scheme for detecting increases in fraction nonconforming
นักวิจัย : Haridy, Salah , Wu, Zhang , Khoo, Michael B. C. , Yu, Fong-Jung
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Haridy, S., Wu, Z., Khoo, M. B.,& Yu, F. J. (2012). A combined synthetic and np scheme for detecting increases in fraction nonconforming. Computers & Industrial Engineering, 62(4), 979-988. , 0360-8352 , http://hdl.handle.net/10220/13135 , http://dx.doi.org/10.1016/j.cie.2011.12.024
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Computers & industrial engineering
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The applications of attribute control charts cover a wide variety of manufacturing processes in which quality characteristics cannot be measured on a continuous numerical scale or even a quantitative scale. The np control chart is an attribute chart used to monitor the fraction nonconforming p of a process. This chart is effective for detecting large process shifts in p. The attribute synthetic chart is also proposed to detect p shifts. It utilizes the information about the time interval or the Conforming Run Length (CRL) between two nonconforming samples. During the implementation of a synthetic chart, a sample is classified as nonconforming if the number d of nonconforming units falls beyond a warning limit. Unlike the np chart, the synthetic chart is more powerful to detect small and moderate p shifts. This article proposes a new scheme, the Syn-np chart, which comprises a synthetic chart and an np chart. Since the Syn-np chart has both the strength of the synthetic chart for quickly detecting small p shifts and the advantage of the np chart of being sensitive to large p shifts, it has a better and more uniform overall performance. Specifically, it is more effective than the np chart and synthetic chart by 73% and 31%, respectively, in terms of Weighted Average of Average Time to Signal (WAATS) over a wide range of p shifts under different conditions.

บรรณานุกรม :
Haridy, Salah , Wu, Zhang , Khoo, Michael B. C. , Yu, Fong-Jung . (2554). A combined synthetic and np scheme for detecting increases in fraction nonconforming.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Haridy, Salah , Wu, Zhang , Khoo, Michael B. C. , Yu, Fong-Jung . 2554. "A combined synthetic and np scheme for detecting increases in fraction nonconforming".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Haridy, Salah , Wu, Zhang , Khoo, Michael B. C. , Yu, Fong-Jung . "A combined synthetic and np scheme for detecting increases in fraction nonconforming."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Haridy, Salah , Wu, Zhang , Khoo, Michael B. C. , Yu, Fong-Jung . A combined synthetic and np scheme for detecting increases in fraction nonconforming. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.