Does anyone have a recommendation on a value for the diffusivity coefficient (sq mm/s) of (high density) polyethylene? That datum has been surprisingly difficult to find on the web.
I am a beginner with ProE and have not yet successfully found any guide on how to taper a curved section as shown in the attached sketch. I believe the "extrude" function has an option to flare/taper the geometry, but I have not figured out how to apply that to a curved trajectory. The section...
Thanks for catching the oversight (now corrected) and offering your recommendation.
http://files.engineering.com/getfile.aspx?folder=668c1d17-b699-4a50-b7bd-89ff288c66e3&file=Thermal_Shock_Rig_-_Armature_Detail.pdf
I wish to modify an existing oil film test rig that tends to pull to one side, preventing the specimen from resting flush on the roller. Please see the attached sketch as a reference. A spring to pull the armature back is the cause of the problem. My proposed solution is to cut the armature...
Seeking guidance on building a simple rig to measure thermal conductivity for insulating materials, I came across a paper which includes the attached figure and equations. This is a modified version of Lee's disk method.
But when analyzing the equations dimensionally, units did not drop out to...
I am experimenting with thermal barrier ceramic coatings and observed that a particular composition consistently adheres to a steel substrate but inconsistently adheres to an aluminum substrate (1 of 3 to 1 of 4). While it appears clear that the difference in the thermal expansion rate between...
After consulting several resources, I am still unclear about the relationship between viscosity and attenuation for Newtonian and non-Newtonian fluids. Stokes Law states that attenuation is proportional to (dynamic) viscosity. That makes intuitive sense for both Newtonian and non-Newtonian...
In another thread there was a discussion about seeking an insulating layer between two metal objects through oxidation. But because oxidation does not lead to a stable equilibrium, the integrity of the substrate is jeopardized.
I am working with a process to apply an iron oxide-based thermal...
I just wish to see if my understanding of the basic chemistry is correct.
The reactants include zirconium oxide (ZrO2) and polyvinyl alcohol (C2H4O) with distilled water as the solvent.
Is it correct to state that polyvinyl alcohol serves as a good binder to zirconium oxide because the...
I am not that experienced using thermocouples (E and K type) and may be overlooking a glaringly obvious fact.
When attaching thermocouples to a National Instruments signal conditioner, I am having difficulty achieving stable temperature readings using a LabView virtual instrument written by a...
Actually, according to the previously attached plot there appears to be a steady-state maximum and minimum back temperature for all specimens after approximately 11 minutes.
As the plot shows, the initial slope is about the same across all specimens, so that variable is unhelpful for a...
You are correct; the coating is designed to behave like a thermal insulator and reduce heat loss through that surface.
Your comments about the specimen geometry and thermal conduction prompt me to mention that an infrared gun measuring the bare metal surface temperature along the width near the...
