Jeongwon Kim

6 Questions 3 Answers 0 Followers

Questions related from Jeongwon Kim

How to interpret FRF, phase and coherence result from impact vibration test?

Currently going through impact hammer test of cantilever beam(200mmx20mmx2mm) which is made of particulate composite(Epoxy/PZT/CB). Hammer sensitivity is 2.25mV/N and accelerometer sensitivity is...

12 May 2024 2,158 2 View

How can I get a reduce graphene oxide from graphene oxide solution?

I want to get a dried, highly reduced graphene oxide from a graphene oxide solution. Is it ok to dry the solution around 80C, 24h? Thank you.

14 February 2024 6,175 4 View

What can we know from the FRF of deformation?

I've been doing a harmonic response analysis using ansys workbench for a while. At first, I thought FRF of deformation would be pretty much similar to FRF of acceleration when analyzing the...

31 October 2023 8,936 0 View

Can FRF of linear system be non-linear?

Assuming the system is linear and FRF of this system is obtained by modal analysis, is it possible that FRF could be non-linear? And how can I know the FRF is linear or not by just checking the...

10 September 2023 4,568 3 View

Can PHR and weight percent have a same numerical value?

Currently reading a paper about silicone rubber/filler material composite. The paper says the PHR of the prepared composite is 5. Later, the paper explains that composite having the PHR value of 5...

07 March 2023 1,989 2 View

How can I successfully polymerize polylactide using low amount of catalyst and initiator?

I'm currently trying to polymerize PLA by ring opening bulk polymerization using Sn(Oct)2 as a catalyst and lauryl alcohol as an initiator. The best result I've got was reducing the amount of...

27 February 2023 6,521 4 View