Capability-based quick switching sampling system for lot disposition

Wu, Chien‐Wei; Lee, Amy H. I.; Liu, Shih‐Wen; Shih, Mei-Hsu

doi:10.1016/j.apm.2017.07.050

Cited by 50 publications

(23 citation statements)

References 20 publications

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“…For the normal distribution, we adopt an example from the IC (e.g., an IC product is shown in Figure 6) industry to illustrate how to use the proposed method in practice 61 . IC manufacturing is essential in the IC industry, and several processes are contained in the IC manufacturing process: wafer fabrication, wafer probe and sort, assembly/packaging, and final test.…”

Section: Case Studiesmentioning

confidence: 99%

Hypothesis testing of process capability index Cpk from the perspective of generalized fiducial inference

Meng

Yang

Huang

2020

Quality & Reliability Eng

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Hypothesis testing of Cpk is an essential part for decision making on process capability. The difficulty to test the hypothesis of Cpk is the complexity of the natural estimator Ĉpk distribution even under the normal distribution. Thus, traditional methods of the hypothesis testing of Cpk based on the natural estimator Ĉpk only give the approximate test method under the normal distribution and seldom discuss the hypothesis testing under some commonly used but complex non‐normal distributions. The emerging generalized fiducial inference (GFI) in recent years is an effective method for statistical inference on complex statistics. Thus, we first propose a novel hypothesis testing method for Cpk based on generalized p‐value. For application, the mathematic expression of the proposed method for the commonly used normal distribution, Gamma distribution, Weibull distribution, and two‐parameter exponential distribution is derived in detail. Next, to study the performance of the proposed method in terms of the frequency property, the real probabilities of Type I error and Type II error are calculated through simulation. The calculated results show that the proposed method has satisfactory performance for different distributions. Finally, the implementation of the proposed method is illustrated by two real examples.

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Section: Case Studiesmentioning

confidence: 99%

Hypothesis testing of process capability index Cpk from the perspective of generalized fiducial inference

Meng

Yang

Huang

2020

Quality & Reliability Eng

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“…With accurate calculations and explanations, PCIs can provide useful process information and serve as effective tools in determining whether a product meets the quality capabilities required by manufacturers or customers [4]. In practice, manufacturers utilize PCI estimators such as the process mean µ and process variance σ to determine whether the process capability regarding a quality characteristic reaches customer requirements [3].…”

Section: Lower Confidence Limit For Cpmmentioning

confidence: 99%

“…Hsu et al [3] stated that higher PCI values indicate higher quality yield and lower quality loss. Thus, effectively monitoring PCI values can help a company reduce production costs and scrap losses and ensure that the customers receive products of stable and satisfactory quality [4]. Numerous quality managers and researchers have used PCI analysis results to make and gauge improvements as well as enhance product quality and performance [5]- [13].…”

Section: Introductionmentioning

confidence: 99%

Quality Capability Assessment for Thin-Film Chip Resistor

Chen

Yang

2019

IEEE Access

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Chip resistors are a type of resistor among passive components; they are mainly used to regulate the voltage and current in electronic products. A single electronic product may be embedded with dozens of or even more than a thousand thin-film chip resistors varying in resistance. Thin-film chip resistors have low temperature coefficients, which makes them stable and reliable. They have five primary nominalthe-best (NTB) quality characteristics: length, width, height, upper width, and lower width. To increase the quality of thin-film chip resistors and prevent losses from customers returning low-quality or defected products, this study proposes a quality capability assessment method. The proposed method takes sampling errors into account and includes acceptance criteria for individual quality characteristics and the total quality capability. If either of the criteria is not fulfilled, then the manufacturer must improve quality capabilities. A case study of a manufacturer in central Taiwan is presented to illustrate the feasibility of the proposed method. Finally, conclusions and recommendations for future work are presented. INDEX TERMS Thin-film chip resistor, process capability index (PCI), quality capability analysis chart (QCAC), normal-the-best (NTB), lower confidence limit (LCL).

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“…The numerical examples show that by considering the sampling inspection plans, the buyer gains more profit compared to the traditional EOQ, and EOQ models with full inspection. Wu et al (2017) proposed two types of variables quick switching sampling (VQSS) system based on the process capability index Cpk are proposed. The one is under a normal inspection and the other is under a tightened inspection.…”

Section: Literaturementioning

confidence: 99%

The Comparative Study on Expected Total Quality Cost Between Traditional Single Sampling Plan and Economical Design

Huang¹,

Cheng²

2019

IJQR

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In the quality inspection practice of the consumer electronics industry, MIL-STD-105E sampling table is viewed as the basis for sampling plans. This traditional quality inspection plan determine the sample size and reject rule based on the size of lot, consumer's and producer's risk and average quality level (AQL). Traditional sampling plan does not consider internal and external quality costs. However, quality costs were considered in many previous researches, but the comparison between traditional and economical design of single sampling plan is rare from now. This paper discusses the sampling test before the receiving inspection which is vendor simulated buyers. Includes the costs of inspection, rework, replacement, and external failure cost are considered. We compare the quality economical design with traditional single sampling plan under the total quality cost. This paper can be regarded as a reference for future studies and practical applications.

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Capability-based quick switching sampling system for lot disposition

Cited by 50 publications

References 20 publications

Hypothesis testing of process capability index Cpk from the perspective of generalized fiducial inference

Hypothesis testing of process capability index Cpk from the perspective of generalized fiducial inference

Quality Capability Assessment for Thin-Film Chip Resistor

The Comparative Study on Expected Total Quality Cost Between Traditional Single Sampling Plan and Economical Design

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