Flight Tests on U.S.S. Los Angeles. Part II : Stress and Strength Determination (1930)
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extreme fiber is only about seven-eighths as great as if the linear stress distribution of the ordinary bending theory occurred. The theo- retical section modulus is therefore multiplied by %, making its effective value 75.5 m sq. in. (The combination of meters and square inches may appear curious,… … Figure 3.—Strain-gage indicating apparatus the section modulus in meter-square inches gives the stress in the customary engineering units of pounds per square inch.) Converting the deflections of the strain gage record into stress, and thence into bending moment, 1 centimeter deflection represents…
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