Accession Number : AD0723049

Title :   A Proposed Limit for Printed-Circuit Board Insertion Forces.

Descriptive Note : Technical note,

Corporate Author : HUMAN ENGINEERING LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Randall,R. Bradley

Report Date : MAR 1971

Pagination or Media Count : 13

Abstract : A study was made to recommend a maximum force level that an individual inserting printed circuit boards (PCBs) into equipment by pushing with his thumbs would not have to exceed to fully seat the PCB. Twenty-four subjects pushed against a simulated circuit card with two handle orientations in each of two directions. Each subject exerted his maximum steady force for three to five seconds, and then 'lunged' to achieve the greatest maximum force possible. A recommended limit of 25 pounds was calculated from the results. This value is achievable by 95.8 percent of the population using a steady push. By lunging, more than 99 percent of the population can exert a 25-pound force. (Author)

Descriptors :   (*HUMAN FACTORS ENGINEERING, *PRINTED CIRCUITS), FORCE(MECHANICS), PERFORMANCE(HUMAN), MAINTENANCE PERSONNEL

Subject Categories : Electrical and Electronic Equipment
      Human Factors Engineering & Man Machine System

Distribution Statement : APPROVED FOR PUBLIC RELEASE