vibration along a steel bar
vibration along a steel bar
(OP)
what is the best grade of steel for vibration transmitting? If there is a vibration at one end of a steel bar, we want that to travel the length of the bar and be reproducable. We know just about any material will do this but to have the best for the job wouldnt hurt. Higher or lower carbon content? does stainless do better or worse, does zinc plating help? etc...
I appreciate any info on this subject
Thank you,
Bryan
I appreciate any info on this subject
Thank you,
Bryan





RE: vibration along a steel bar
My opinion is that the way the bar is held at ends is much more important in transmitting the elastic vibratory energy, unless you have a very very long bar.
prex
http://www.xcalcs.com
Online tools for structural design
RE: vibration along a steel bar
Maui
RE: vibration along a steel bar
The bar would be open on the ends and be held along the length of the bar by something with varying consistency such as soil...so the sound vibration would constantly be dampend as it travelled the length of the bar.
I am wondering if using a hollow pipe rather than a solid bar would increase the sound vibrations' distance due to the added ambient noise inside the tube. I guess i'll have to play with that to see.
Still learning
Thanks again,
Bryan
RE: vibration along a steel bar
RE: vibration along a steel bar
RE: vibration along a steel bar
pj
RE: vibration along a steel bar
RE: vibration along a steel bar
It wasn't me, but i'd be more than happy to star it...
i'm still new to the site and wasnt sure of the proper etiquette
that liquidmetal is pretty interesting...not sure how cost efficient it is...yet
(always use the "yet"...DVD players were seen as not cost efficient either till 5 years later...still waiting on that thin panel big screen TV to get down to $200)
The actual use of what i'm looking for is a bar/tube (1 in. OD +/- ) that can withstand being driven into the ground with a sledge hammer (1-4 ft) and have optimal sound transmission in order to set a microphone on the bar and hear the sounds under the earth's surface. They make devices called probe bars that are steel but they arent designed for this specific application (acoustically). I was wondering if a certain material or grade would be best for this situation.
There has been a lot of great responses...high elasticity, hard grade of aluminum, low carbon steel.
I can see the users jerking on the bar trying to get it out of the ground when they are done...so something easily bendable wouldnt be too good.
The acoustic difference from one material to another (within a certain group) may not be noticable to the human ear but to be able to say its the best for the situation gives marketing another attack angle.
Thank you all, for your help on this subject,
Bryan
RE: vibration along a steel bar