Short answer
Implement a systematic approach to identify, quantify, and manage the costs associated with 'No Fault Found' events throughout the product lifecycle.
- Field
- Commercial Production
- Source
- International Journal of Production Economics (2015)
- Method
- Multi-method design including online survey, workshops, and semi-structured interviews, supported by an agent-based model.
- Sample
- 12 key participants across 7 UK organisations
- Evidence
- Strong effect
A structured framework can be developed to estimate the often-overlooked costs associated with 'No Fault Found' (NFF) events, enabling better resource allocation and system reliability. This commercial production research insight is drawn from a 2015 study published in International Journal of Production Economics. Using Multi-method design including online survey, workshops, and semi-structured interviews, supported by an agent-based model. with 12 key participants across 7 UK organisations, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Implement a systematic approach to identify, quantify, and manage the costs associated with 'No Fault Found' events throughout the product lifecycle.
Quantifying the hidden costs of 'No Fault Found' events to optimize maintenance and logistics.
A structured framework can be developed to estimate the often-overlooked costs associated with 'No Fault Found' (NFF) events, enabling better resource allocation and system reliability.
International Journal of Production Economics · 2015
Key Findings
- 01Identified major NFF cost drivers across the supply chain (e.g., transportation), the OEM (e.g., inventory), and the customer (e.g., lost man hours).
- 02Developed a generic framework that integrates qualitative and quantitative data for NFF cost estimation.
- 03Demonstrated that the framework can be applied to specific components for targeted cost analysis.
Application
Design takeaway
Implement a systematic approach to identify, quantify, and manage the costs associated with 'No Fault Found' events throughout the product lifecycle.
How to apply
When designing products or systems, conduct a 'cost of NFF' analysis by mapping out the potential return pathways and identifying all associated logistical, administrative, and customer-impact costs. Use this to inform design choices for improved diagnostics and reduced false returns.
Project actions
- 01When designing a product, think about how easy it will be to test and diagnose if it's actually broken.
- 02Consider the entire lifecycle of your product, including what happens if it needs to be returned or serviced.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Utilizes a mixed-methods approach for comprehensive data collection.
- +Develops a generic framework applicable to various contexts.
- +Employs an agent-based model for quantitative impact assessment.
Limitations
It can be challenging to get accurate cost data from different parts of the supply chain, and some costs might be difficult to quantify precisely.
Reliability & validity
Reliability could be enhanced by using standardized data collection instruments and training interviewers. Validity is supported by the triangulation of data from surveys, interviews, and workshops, and the use of a modeling approach to confirm findings.
Think critically
How might the increasing complexity of modern products exacerbate the 'No Fault Found' problem, and what design strategies could proactively address this?
Design Principles
"Proactively account for and mitigate the financial and operational impacts of equipment that is returned but found to be fault-free."
NFF events, where equipment is returned for repair but found to be functioning correctly, incur significant hidden costs. Understanding and quantifying these costs, which include logistical overhead, reduced asset availability, and customer downtime, is crucial for optimizing maintenance strategies and improving the overall efficiency of product lifecycles.
What This Means for Your Design
Sometimes, equipment is sent back for repair but turns out to be fine. This costs money in shipping, checking, and lost time. This study shows how to figure out exactly how much money is lost this way and how to reduce it.
How to use in your project
- 1.Reference this study when discussing the economic implications of design choices, particularly concerning product reliability, repairability, and after-sales service.
Add to My Project
Quick Cite
Paragraph starter
The research by Erkoyuncu et al. (2015) provides a framework for estimating the significant, often hidden, costs associated with 'No Fault Found' (NFF) events. By analyzing factors such as transportation, inventory, and lost user time, their work highlights the economic impact of equipment returned for repair but found to be functional. This underscores the importance of designing for robust diagnostics and clear fault-reporting mechanisms to minimize these overheads and improve overall system efficiency and reliability.
Source
International Journal of Production Economics
A framework to estimate the cost of No-Fault Found events
journal · 2015
View sourceQuestions About This Research
- What does the research say about quantifying the hidden costs of 'no fault found' events to optimize maintenance and logistics?
- Implement a systematic approach to identify, quantify, and manage the costs associated with 'No Fault Found' events throughout the product lifecycle. Evidence: International Journal of Production Economics (2015).
- Why does "Quantifying the hidden costs of 'No Fault Found' events to optimize maintenance and logistics." matter for design?
- NFF events, where equipment is returned for repair but found to be functioning correctly, incur significant hidden costs. Understanding and quantifying these costs, which include logistical overhead, reduced asset availability, and customer downtime, is crucial for optimizing maintenance strategies and improving the overall efficiency of product lifecycles.
- How can designers apply this research?
- Implement a systematic approach to identify, quantify, and manage the costs associated with 'No Fault Found' events throughout the product lifecycle.
- What were the main findings?
- Identified major NFF cost drivers across the supply chain (e.g., transportation), the OEM (e.g., inventory), and the customer (e.g., lost man hours).. Developed a generic framework that integrates qualitative and quantitative data for NFF cost estimation.. Demonstrated that the framework can be applied to specific components for targeted cost analysis.
- What research method was used?
- Multi-method design including online survey, workshops, and semi-structured interviews, supported by an agent-based model. with 12 key participants across 7 UK organisations.
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2015 journal from International Journal of Production Economics.
- What should I do differently in my next project?
- When designing products or systems, conduct a 'cost of NFF' analysis by mapping out the potential return pathways and identifying all associated logistical, administrative, and customer-impact costs. Use this to inform design choices for improved diagnostics and reduced false returns.
- What are the limitations?
- The framework's accuracy depends on the quality and completeness of the data collected regarding NFF events and associated costs. The agent-based model's output is sensitive to the parameters and assumptions used.