CDC STACKS serves as an archival repository of CDC-published products including scientific findings, journal articles, guidelines, recommendations, or other public health information authored or co-authored by CDC or funded partners.
As a repository, CDC STACKS retains documents in their original published format to ensure public access to scientific information.
i
Influence of Averaging Time-Interval on Shoe-Floor-Contaminant Available Coefficient of Friction Measurements
-
1 2020
-
-
Source: Appl Ergon. 82:102959
[PDF-1.43 MB]
Details:
-
Alternative Title:Appl Ergon
-
Personal Author:
-
Description:Available coefficient of friction (ACOF) is a common metric of footwear traction performance. ACOF is the ratio of friction to normal force, often averaged over a time-interval. The time-interval needed to achieve repeatable and valid ACOF is unknown. A post-hoc analysis was performed on nine shoe-floor-contaminant combinations to assess the repeatability and bias of data averaged across 4 time-intervals (2 ms, 50 ms, 100 ms, 200 ms) after the target normal force was reached. The ability to predict human slips was assessed for ACOF across these intervals. Differences in repeatability and validity across the four intervals were small. However, statistically significant differences were observed for the shortest compared with the longest interval (lower repeatability yet modestly improved predictive ability). Given the limited impact of time-interval on the results, a shorter interval of 50 ms is recommended to enable testing of smaller floor samples.
-
Subjects:
-
Keywords:
-
Source:
-
Pubmed ID:31568960
-
Pubmed Central ID:PMC6922306
-
Document Type:
-
Funding:
-
Volume:82
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
