Influence of the Interaction Between Parts and Appraisers on the Results of Repeatability and Reproducibility Analysis

Plura, Jiří; Klaput, Pavel

doi:10.12776/qip.v16i1.59

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…The continual improvement term used in ISO 9001 is explained in ISO 9000 (the document that defines the terminology used in ISO 9001 standard), and it is defined as “recurring activity to enhance performance” [1]. Broadly two approaches are used for continual improvement; breakthrough improvement and incremental improvement often termed as Kaizen (Plura, 2000). Singh and Singh (2015) described the history of continual improvement tools, barriers for continual improvement and types of Kaizens.…”

Section: Literature Reviewmentioning

confidence: 99%

“…ISO 9001 is one of the most successful quality management system standards in the world, with over one million certificates issued worldwide (ISO Survey, 2022). It is a generic quality management system standard and can be used by organisations of any size, nature, or sector (Plura, 2000). One of the requirements to be fulfilled by the organisations certified to this standard is continual improvement in performance (Domingues et al ., 2019; Kartha, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Fallacy of continual improvement in the longitudinal study of ISO 9001 and IATF 16949 standards

Yadav¹,

Heriyati

2023

IJPPM

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PurposeGeneric quality management system standard ISO 9001 and the automotive quality management system standard IATF 16949 both require organisations to demonstrate continual improvement in their customer satisfaction and the number of non-conformities identified during quality system audits. However, the long-term trends of these two parameters under ISO 9001 and IATF 16949 standards are not researched so far. It is expected that under continual improvement, organisations will achieve a step-function/stair-case shaped pattern. This study evaluates if this expectation is true when long-term performance of certified organisations is assessed.Design/methodology/approachA longitudinal exploration of three organisations certified to ISO 9001 standard and three certified to IATF 16949 standard is done. The observations are further substantiated using secondary data for the same ten years period about customer satisfaction of the major automobile manufacturers.FindingsIt is observed that none of the two indicators, i.e. the customer satisfaction and number of non-conformities, in any of the six organisations show step-wise/stair-case type improvement. All indicators followed random up and down patterns like ocean waves. It is paradoxical that certified organisations are claiming continual improvement and are remaining certified but there is actually no long-term improvement.Originality/valueLongitudinal studies for the generic quality management standard ISO 9001 and the quality system standard for automotive sector IATF 16949 are rare. The revelation about ocean wave patterns observed in the long-term trends for customer satisfaction and the number of non-conformities in ISO 9001 and IATF 16949 certified organisations is a startling finding. It is outlandishly different from the conventional perception of a staircase-styled continual improvement pattern expected a priori in certified organisations.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fallacy of continual improvement in the longitudinal study of ISO 9001 and IATF 16949 standards

Yadav¹,

Heriyati

2023

IJPPM

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“…Numerous studies have shown that due to the variability of product quality indicators, there are no absolutely effective methods to prevent non-conformities [1][2][3][4]. The inability to prevent non-conformities leads to the need to identify non-conformities using product quality inspection methods.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of a method for optimizing a product quality inspection plan by the risk of non-conformity slippage

Haievskyi¹,

Kvasnytskyi²,

Haievskyi³

2020

EEJET

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Risk-based approaches are a feature of the modern quality management system. A method of optimization of product quality inspection plan by the risk of non-conformity slippage is proposed. The method is based on a risk ranking matrix, criteria of the failure mode and effects analysis (FMEA), block classification of inspection plans, approaches to non-conformity prediction, and probability multiplication theorem for independent events. The risk of non-conformity slippage was defined as a criterion of inspection plan optimization. The proposed method allows determining the acceptability of the risk, with 100 % quality inspection, in case of abandoning the inspection operation, the possibility of applying sampling and minimum sampling volumes necessary to ensure an acceptable risk level. Relationships were derived to determine the minimum required number of inspected units out of 1,000, with an acceptable risk level in product quality inspection. The initial data for the calculation are the main characteristics of the inspection plan: the probability of the object conformity with the requirements for the controlled quality characteristic, the probability of not detecting non-conformity with the provided inspection method, the rate of non-conformity slippage, which ensures an acceptable risk level. The formula allows calculating the minimum sampling volume that provides an acceptable level of non-conformity slippage risk during the implementation of the product quality inspection plan (QIP). The proposed method was tested on the inspection plan for welds of air tanks of the railway car braking system. It is possible to abandon the original 100 % inspection plan and apply sampling, which provides an acceptable level of non-conformity slippage risk. This allows reducing the volume and costs of inspection by 18 %

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Applied Load and Calibration of the Hardness Tester

Petrík¹,

Šolc²,

Mikloš³

2014

Manufacturing Technology

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Influence of the Interaction Between Parts and Appraisers on the Results of Repeatability and Reproducibility Analysis

Cited by 4 publications

References 3 publications

Fallacy of continual improvement in the longitudinal study of ISO 9001 and IATF 16949 standards

Fallacy of continual improvement in the longitudinal study of ISO 9001 and IATF 16949 standards

Development of a method for optimizing a product quality inspection plan by the risk of non-conformity slippage

Applied Load and Calibration of the Hardness Tester

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