we have a problem in our plant, with the valve seats of valves, after a lot of checking seems that at least one of the causes is cryogenic thermal shock to the seat material.
kel-F, PTFE, or anything else just can´t keep it up, specially on the weekends the valve gets to ambient temperature or...
I could like to know what degrades PVC rubber, is it air, ozone, UV rays, water/moisture, heat...
and how to avoid degradation, waxing the surface, storing in the dark, using nitrogen atmosphere, painting it.
thanks for any help.
Jabonet.
I have heard all this about not using deepcycle batteries for cranking.
I had a DC Battery installed in a ford mustang, the amps that the starter needs is around 200 amps, this is not much for a DC bat. this battery lasted for ages of heavy use.
be aware that the alternator on your car is...
You are asking for anti-squat rear suspension, which can actually lift the rear of the car for a few yard, and put quite some extra load on the back wheels at the cost of lifting the CG. in F1 cars, there is practically no suspension whatsoever, and most of the force is aerodynamic.
It sounds to me that IR thermography is not the right tool to detect you "dime", maybe you can detect the fire, when the trash is already out and spreaded over.
there are early fire alert systems, that are able to detect by smeling the posible cause of fire. something like...
I am looking for the ABS Scantlings for Offshore Racing Sailboats. I understand that ABS no longer publish this, anybody know where to find it (free if posible) on the web?
Thanks
Javier Bonet
I have use extruded styrofoam, and then melt it with acetone or gasoline, but a good result depends on what size a piece you are making.
another way I do it, first a waxed balsa plug, then a thin layer of glass and epoxy, when split open this shell, take the wood out, glue it back together, and...
I can only think of three cases where using a stern thruster could be a must, if you have twin rudders and one propeller, therefore no flow over the rudder, in which case you need some speed to steer.
in case you want to keep a very precise position over the seafloor, and your main engine is...
I also have a problem with this E must equal A, no problem with the assumption that it happens only when there is thermal equilibrium, but its also that its true, only when you take in account the whole espectrum of radiation that is radiated to and from the object, let me explain:
in the case...
I could like to know the price for thermography services.
How much for a roof inspection, an electrical inspection of a switchboard or a breaker, or how much does it cost for a company to have a thermographer to come up every few weeks and check on different equipment for preventive...
What could be the diference between a microbolometer capable of detecting temperature diferences of 0.1 K and a photon detector capable of the same 0.1 K.
Jabonet
Actually I could like a website where you could find reviews on IR cameras, no matter how old, or what manufacturer. that could be perfect.
any Info on a MicronViewer 7290A?
I need to know the performance of a Inframetrics 525 infrared camera, is it any good? how much does it cost to fix and/or calibrate? anybody has a set of manual I can copy? is this camera delicate? anything you may think of, thanks.
I want to know how much is the maximun temperature you can achieve with a solar concentrator.
lets say that you have a volume of one cubic millimeter, and that you start concentrating reflected rays from the sun passing through this volume, is it posible to achieve a temperature higher that the...
Anybody knows how the head in a peristaltic pump changes as viscosity or succion head changes.
I need to pump to very diferent viscosities liquids at the same volume ratio, no matter what succion head each one has.
My doubts is that for big sucction heads, the vicous flow may colapse the...
maybe if you just increase the airflow around the computers, or maybe removing the cases or just puting some fans towards the computer, it will allow the hot air inside/close to the computer to disipate faster.
If you send and email to the technical department at SP systems, they will be able to tell you theirs resins thermal conductivity, I guess most epoxys are more or less conductive.
www.spsystems.com
I could say its more like falling one meter and landing on top of the bus roof, a concrete slab is harder than the bus (I guess) and if the bus front bends it takes a lot of energy doing so.
the speed is not really high, the impact is pretty much the same as a marathon runner could suffer if he...
hello. I have several questions.
1) I am new to thermography, and looking for a first level course on infrared, from other thread, I have found that these are the most important place for them:
Snell Infrared
http://snellinfrared.com/course/index.asp
ITC (Infrared Training...
