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Related Concept Videos

Fatigue01:21

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Fatigue occurs when materials rupture under repeated or fluctuating loads, even at stress levels far below their static breaking strength. It typically results in brittle failure, even for ductile materials. It is a critical consideration in designing machines and structural components subjected to repetitive or varying loads. The nature of these loadings can range from fluctuating loads like unbalanced pump impellers causing vibrations to repeatedly bending a thin steel rod wire back and forth...
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Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
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Proposed Data-Driven Approach for Occupational Risk Management of Aircrew Fatigue.

Benjamin Zhi Qiang Seah1, Wee Hoe Gan2,3,4, Sheau Hwa Wong1,3,5

  • 1Republic of Singapore Air Force Medical Service, Singapore.

Safety and Health at Work
|December 13, 2021
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A new framework for assessing aircrew fatigue and performance was developed and trialed. This standardized protocol ensures objective fatigue risk assessment, crucial for safe flight operations.

Keywords:
AviationData drivenFatigue risk managementPerformance-based regulatory approachStandardized protocol

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Area of Science:

  • Aviation safety
  • Occupational health
  • Human factors in aviation

Background:

  • Fatigue is a significant, underreported risk in aviation operations.
  • The aviation industry lacks a standardized fatigue risk assessment protocol.
  • Current methods are not consistently applied across operators.

Purpose of the Study:

  • To present a framework for monitoring aircrew fatigue and performance using real-world data.
  • To determine safe crew configurations for commercial airline operations.
  • To address the need for a standardized fatigue risk assessment protocol.

Main Methods:

  • Developed a protocol identifying fatigue risk factors and performance degradation triggers.
  • Utilized subjective (Karolinska Sleepiness Scale, Samn-Perelli Crew Status Check) and objective (Psychomotor Vigilance Task, actigraphy, sleep logs) measurements.
  • Created a workflow to flag high-risk flight operations for mitigation.

Main Results:

  • Affirmed the technical feasibility and validity of the proposed fatigue assessment framework.
  • Demonstrated meaningful interpretation of fatigue and performance indicators.
  • Successfully trialed the protocol in an operational study comparing crew sizes.

Conclusions:

  • A standardized occupational assessment protocol enhances consistency and objectivity in fatigue evaluation.
  • The framework supports evidence-based recommendations for safe work practices.
  • Objective fatigue assessment is vital for improving aviation safety.