THE SHOCK AND VIBRATION BULLETIN.

Contents Theory of dynamic tests of structures Fatigue life under various random loading spectra Combined broadband and stepped narrowband random vibration On the use of multiple multi-point random excitation with application to surveyor spacecraft tests Ground test simulation of lift-off and transonic vibration excitation mechanisms on the ranger spacecraft Methods of control of multiple shaker testing system On synergetic effects of combinations of vibration and other environments A multiple-frequency, shake-testing technique for structures with rapidly-changing dynamic characteristics A progress report on force controlled vibration testing Vibration on sandwich panels in a vacuum The vibration design approval and acceptance test program for the gemini spacecraft-component, module and whole vehicle testing Techniques for extending the capability of random equilization equipment A broadband hydraulic vibration exciter Advantages of multipoint control for vibration testing of complete ranger flight spacecraft Vibration input control investigation A unique suspension system for longitudinal vibration testing of large launch vehicles Combined random vibration and extreme temperature testing of integrated circuits Implications of spacecraft vibration qualification testing requirements on structural design Use of impulsive loading techniques in the study of ship vibration The relationship between a logarithmically swept excitation and the build-up of steady-state resonant response Analysis of the rotor blade vibratory stresses of the propulsion wind tunnel compressors.