Recent content by saravanan_n

Please anybody tell me the answers for these questions.I will be thankfull to them.Its in ASTM materials.I don't have this.So please help.

1. Why Nickel has got negative gauge factor? 2. What effect it will have when we use these materials in strain gauges?

Thanks for the reply.I am very much pleased.Thank you!

Equation Not Agrreable If you say Poisson Ratio =(da/a)/(dl/l) then do you agree with this equation also da=a(1-((poisson ratio) dl/l)^2)-a (in whatever context it comes)

Sorry for being impatient,Since I have test on this I have to hurry. Now we get DR/R=DL/L+DP/P-DA/A Then we divide whole eqn by dl/l (dr/r)/(dl/l)=1+(dp/p)/(dl/l)-m so we can put Gauge Factor=1+Piezoresistivity-Poisson ratio Is this equation right?

please provide me the proof for this formulae: da=a(1-m dl/l)^2-a i.e., da/a=(1-m dl/l)^2 -1 =1+m^2 (dl/l)^2-2m dl/l -1 =(m dl/l)^2 - 2m dl/l so da/a= (m dl/l)^2 - 2m dl/l =m dl/l(m dl/l -2) so (da/a)/(dl/l)=m^2 (dl/l)-2m now atleast...

Book reference It is from "Transducer Engineering" by S.Renganathan

Please I need a answer How this formula is obtained? da=a(1-m dl/l)^2 - a please help me.

gauge factor While deriving the formulae for Gauge factor of materials(resitors) in strain gauges it comes.In between they have given this formula. First they told R=PL/A R=RESISTANCE P=SPECIFIC RESISTANCE L=LENGTH A= AREA Then, dR=a(PdL+LdP) - P L da -------------------...

can anybody please tell me how this equation has been arrived? dA=A(1-m dL/L)^2 -A where A=Area of cross section L=length

please help on this formula how it has been arrived? dA=A(1-m dL/L)^2-A where m= Poisson's ratio A=area of cross section L=length

Degrees of freedom Degrees of freedom is given by DOF=3(N-1)-2P-H N= number of links p=numberof lowerpair h=number of higher pair lower pairs are sliding pair,cylindrical pair,spherical pair higher pairs have only point contact. eg;cam and follower