Experimental investigations on the light scattering of colloidal spheres. VIII. Brief survey of problems in angular light-scattering measurements and performance of a new type of reflection-free scattering cell

1970 ◽  
Vol 74 (24) ◽  
pp. 4241-4251 ◽  
Author(s):  
Wilfried Heller ◽  
Jack Witeczek
Keyword(s):  
Light Scattering ◽  
Experimental Investigations ◽  
Colloidal Spheres ◽  
Scattering Measurements ◽  
New Type ◽  
And Performance

Study of Cycloidal Pendulum Dynamic Absorber for Vibration Control of Structures

2006 ◽  
Author(s):  
Toshihiko Komatsuzaki ◽  
Yoshio Iwata
Keyword(s):  
Vibration Control ◽  
Natural Frequency ◽  
Experimental Investigations ◽  
Practical Application ◽  
Pendulum System ◽  
Optimal Damping ◽  
Intrinsic Nonlinearity ◽  
New Type ◽  
Dynamic Absorber ◽  
And Performance

The dynamic absorber has been widely used for suppressing vibration in structures. In practical application, the optimal tuned absorbers are designed and used in terms of natural frequency and additional damping so that resultant frequency response may become fully reduced. Among various types of dynamic absorber, the pendulum type is preferable due to its simple constitution and performance reliability. However, damping performance of ordinal pendulum system may be influenced by levels of excitation because of intrinsic nonlinearity in system which leads to slight change in natural frequency. The present paper deals with a study of new type pendulum dynamic absorber. It is known that pendulum moving along cycloidal curve strictly keeps uniform period. Both analytical and experimental investigations show that a strict optimal damping condition can be satisfied in cycloidal pendulum damper, in conjunction with better damping performance compared with normal pendulum.

Experimental investigations on the light scattering of colloidal spheres

1956 ◽  
Vol 11 (3) ◽  
pp. 195-213 ◽  
Author(s):  
Richard M. Tabibian ◽  
Wilfried Heller ◽  
Joseph N. Epel
Keyword(s):  
Light Scattering ◽  
Experimental Investigations ◽  
Colloidal Spheres
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