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Article
Publication date: 9 July 2020

Nadia Bahria, Imen Harbaoui Dridi, Anis Chelbi and Hanen Bouchriha

The purpose of this study is to develop a joint production, maintenance and quality control strategy involving a periodic preventive maintenance policy.

352

Abstract

Purpose

The purpose of this study is to develop a joint production, maintenance and quality control strategy involving a periodic preventive maintenance policy.

Design/methodology/approach

The proposed integrated policy is defined and modeled mathematically.

Findings

The paper focuses on finding simultaneously the optimal values of the preventive maintenance period, the buffer stock size, the sample size, the sampling interval and the control chart limits, such that the expected total cost per time unit is minimized.

Practical implications

The paper attempts to integrate in a single model the three main aspects of any manufacturing system: production, maintenance and quality. The considered system consists of one machine subject to a degradation process that directly affects the quality of products. The process and product quality control is carried out using an “x-bar” control chart. In the proposed model, a preventive maintenance action is performed every α inspections of product quality in order to reduce the shift rate to the “out-of-control” state. A corrective maintenance action is undertaken once the control limits are exceeded. In order to palliate perturbations caused by the stopping of the machine to undergo maintenance actions, a buffer stock is built up to ensure the continuous supply of the subsequent machine. The main goal of this work is to develop a model that captures the underlying link between the preventive maintenance policy, the buffer stock size and the parameters of an “x-bar” control chart used to control the quality of the product. Numerical experiments and a study of the effects of the input parameters variation on the obtained results are performed.

Originality/value

The existing models that simultaneously consider maintenance, inventory and control charts consist of a condition-based maintenance (CBM) policy. Periodic preventive maintenance (PM) has not been considered in such models. The proposed integrated model is original, in that it links production through buffer stocks, quality through a control chart and maintenance through periodic preventive maintenance (different practical settings and modeling approach than when CBM is used). Hence, this paper addresses practical situations where, for economic or technical reasons, only systematic periodic preventive maintenance is possible.

Details

Journal of Quality in Maintenance Engineering, vol. 27 no. 4
Type: Research Article
ISSN: 1355-2511

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Article
Publication date: 13 September 2022

Nadia Umair Ansari, Muhammad Zaki Rashidi and Kashif Mehmood

This paper aims to describe the lived experiences of modern urban mothers in Pakistan as they navigate shared motherhood responsibilities with family elders. This paper brings to…

284

Abstract

Purpose

This paper aims to describe the lived experiences of modern urban mothers in Pakistan as they navigate shared motherhood responsibilities with family elders. This paper brings to light their feelings, fears and ambitions towards safeguarding the environment for the future of their children, by reconciling ancient traditions of their female elders with contemporary sustainable consumption practices.

Design/methodology/approach

This phenomenological study explores lived experiences of urban mothers through in-depth personal interviews. Their discourse explores sharing childcare responsibilities with family matriarchs, negotiating “green” parenting strategies between intergenerational parenting partners.

Findings

Navigating life through the intersections of modernity and tradition and ethical choices and consumerism, urban mothers integrate wisdom of their ancestors into their modern lives to mitigate the environmental degradation of today.

Originality/value

This study sheds light on a unique genre of green mothers, termed as the traditionally green eco-mom, which allows modern mothers and their female elders to synchronously adopt sustainable childcare behaviours that overcome intergenerational barriers by reconciling contemporary lifestyles with traditional wisdom.

Details

Qualitative Market Research: An International Journal, vol. 26 no. 1
Type: Research Article
ISSN: 1352-2752

Keywords

Available. Content available
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Publication date: 22 August 2022

Free Access. Free Access

Abstract

Details

The Emerald Handbook of Work, Workplaces and Disruptive Issues in HRM
Type: Book
ISBN: 978-1-80071-780-0

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