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I was poking around youtube recently and found such a great resource in Stanford University. They look like they are trying to be the MIT open-courseware of the west coast with their incredible website. Below is a video I found of a lecture in Chemical Engineering on heat exchanger design.
Also from Indian technology center, is a three part series on heat exchanger design. The information is dry but is really good background info.
Part I
Part II
Part III
Part IV
Go Aggies!
Found a really good materials class from the Texas A&M University today. The professor has recorded his review of his lectures and posted them here.
Some of the classes (class 27-33) go over bolted connections and are very interesting. The only real issue is they are in “Real Player” format. One of my most hated codecs on the planet.
What really is the nut factor in a torque calculation? Well the people from Archetype Joint feel it has been used mostly as a “fudge factor” for many years to explain the wide scatter in transferred load. One factor that they discuss that effects the all aspects of the nut factor is the bolt lubrication below the nut ~ the larger the hole the bigger the error.
They have a online newsletter and this article is about the history of the nut factor called “The Nut Factor: A Riddle, Wrapped In a Mystery, Inside an Enigma”. I learned quite a few things in their detailed explanation.
Back in April of this year I was asked to build a bolting demonstration unit for one of our customers in Japan. The customer had some issues with making sure all of its maintenance workers understood the importance of using good bolting practices. They had seen a video I did 10 years ago on my first version of this bolting tool. They loved the video so much they wanted a unit for themselves.
This was a unique problem - I had to “remember” exactly how I did it (10 years is a long time ago!) and the science of Data Acquisition has changed a lot in that time. Well I finished it and the customer is very happy and now the rig is in vogue again in my company and I might be building more.