By V. F. Yakovlev, I. S. Inyutin
ISBN-10: 0080102573
ISBN-13: 9780080102573
Measurements for Stresses in computing device elements specializes in the country of pressure and pressure of elements and participants, which determines the provider existence and energy of machines and buildings.
This e-book is split into 4 chapters. bankruptcy I describes the actual foundation of a number of equipment of measuring traces, including pressure gauges, photoelasticity, X-ray diffraction, brittle coatings, and dividing grids. the fundamental techniques of the electrical pressure gauge procedure for measuring stresses within desktop parts are coated in bankruptcy II. bankruptcy III elaborates at the result of experimental paintings on stresses and lines in linear, aircraft, and third-dimensional states of pressure lower than static load stipulations. The final bankruptcy is dedicated to examples for experimental pressure research of airplane and third-dimensional states of stresses below dynamic so much. Conclusions drawn from the theoretical and experimental investigations mentioned during this textual content are supplied on the finish.
This ebook is meant for engineers and technicians, yet is additionally an exceptional reference for college kids learning at the pressure or traces of computing device elements.
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Example text
A large n u m b e r of p r o b l e m s i n e v i t a b l y arises r e g a r d i n g t h e i r s t r e n g t h c h a r a c t e r i s t i c s , t h e selection of a r a t i o n a l s h a p e a n d so forth. I t h a s been s h o w n t h a t t h e r a n g e of c h a r a c t e r i s t i c s of plastics is far wider t h a n , for e x a m p l e , t h a t of m e t a l s . Therefore, special t e c h n i q u e s a n d conditions for t e s t i n g plastics m a t e r i a l s m u s t be developed. F o r t h e p u r p o s e of m e a s u r i n g t h e stresses i n models, m a n y of t h e m a t e r i a l s of t h e o p t i c a l m e t h o d of stress analysis c a n b e used.
T h e first m a i n r e q u i r e m e n t is satisfied i n p r a c t i c e w h e r e v e r t h e wire of t h e g a u g e is w o r k i n g \\dthin t h e elastic r a n g e . To refiect fully t h e c h a r a c t e r of t h e p h e n o m e n a u n d e r i n v e s t i g a t i o n (second r e q u i r e m e n t ) , t h e s t r a i n g a u g e m u s t u n d e r g o precisely t h e s a m e d e f o r m a t i o n s as t h e section in w h i c h it is placed. F o r t h e m e a s u r e m e n t of surface s t r a i n s t h e s t r a i n g a u g e is affixed t o t h e surface of t h e t e s t p i e c e w i t h a special a d h e s i v e e n s u r i n g t h a t t h e surface a n d t h e wire grid of t h e g a u g e a r e s t r a i n e d t o g e t h e r .
I n t h e e x p e r i m e n t s , t h e m o s t i m p o r t a n t p r o p e r t i e s of t h e p r o t o t y p e a r e s i m u l a t e d in a m o d e l of t h e c o m p o n e n t n a m e l y , ideal elasticity, s p h e r i c a l i s o t r o p y , perfect h o m o g e n e i t y , low d e f o r m a t i o n , a n d also l i n e a r d e p e n d e n c e b e t w e e n s t r a i n s a n d stresses. A s s u m p t i o n of t h e s e p r o p e r t i e s i n t h e i r e n t i r e t y , or p a r t i a l l y w h e r e t h i s is sufficient, p e r m i t s t h e s o l u t i o n of a w i d e r a n g e of p r o b l e m s in s t r e n g t h c a l c u l a t i o n s .
Measurements for Stresses in Machine Components by V. F. Yakovlev, I. S. Inyutin
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