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Welcome to ArchNews

Volume 8

WWelcome to the eighth edition of ArchNews, Archetype Joint’s independent newsletter bringing you the latest in fastening and joining technology. If you have any comments or suggestions for a coming edition of ArchNews, please contact us at 248 377-1147 or at info@archetypejoint.com.

Bolted Joint Application Seminar Under Development

We have been asked on a number of occasions if we could provide courses on bolted joint application. Initially we viewed this as conflicting with our focus on joint development and testing. However it has become apparent that development and manufacturing personnel need to be fully aware of joint performance drivers and the capabilities of specializing testing before they can consider our services. In fact we see that the greatest barrier to consistent excellence is not budget or schedule, but the widespread belief that the bolted joint is a pre-engineered off-the-shelf solution.

Therefore, we have begun development of a one-day seminar with the following unique features:

• Real-world feedback and case studies over a wide spectrum of applications. This is possible through our ongoing experience as an independent test lab.
• Because experiencing the subject matter is the most effect means of learning it, presentation material will be rich with animations and augmented with demonstrations using actual hardware and test equipment.
• While bolted joint application can’t be fully understood without knowledge of governing equations, this seminar will focus on the “how” and “why” while providing reference material for calculating “how much”.

This seminar will be offered starting in February 2010, both as a public course and on-site. Please contact Danielle Rowan at 248 377-1147 or drowan@archetypejoint.com for more information.

Comparison Tests

Each edition of ArchNews also announces the availability of the latest in our series of Comparison Tests. In each test our lab compares several products, or assembly techniques that compete to satisfy a particular fastening or joining need. PDF downloads are free to all Archetype Joint Members. Best of all, there is no cost for membership and signing up takes only minutes.

To Turn the Bolt or to Turn the Nut - That is the Question
The inaugural edition of ArchAdviser included discussion whether torque should be applied the bolt or the nut. This elicited feedback proposing that the right answer was definitely one of the following; the bolt, the nut, or it didn’t matter. As the subject was obviously the source of both interest and dispute, we decided to put it to the test.

Go to Comparison Tests to see what we found.

Welcome Danielle!

Danielle Rowan – Administrative and Quality Manager Last February we were fortunate to have Danielle Rowan join us as Administration & Quality Manager. She comes to Archetype Joint with 5 years experience as an office administrator and an account executive for key manufacturers in the home and car audio industry. She previously gained 5 years CAD experience with General Motors, Durr Automotive, and Knight Industries. Danielle holds an associate's degree in Computer Aided Drafting and Project Management. She will be responsible for all office administrative tasks and the ongoing implementation of Archetype Joint’s Quality Management System.

Archetype Joint in the News

Since the last edition of ArchNews was released, we’ve had six technical articles published in leading trade magazines. Read about it In The News.

Archetype Joint Enhances Test Capabilities

To provide our customers even more complete test services, we have recently invested in the FPD-8010E Pressure Mapping System from FujiFilm. The system scans, digitizes and analyzes exposed Prescale film so that pressure distribution across a joint can be understood quantitatively, eliminating the uncertainty of comparing color shades to a reference chart. We have tested the system by compressing known areas at known loads in our load frame and are satisfied that the system is a valuable tool in joint testing and trouble-shooting.

As we understand that good turn-around is always in demand, we have also augmented our machining capacity by adding a small heat treating furnace and sandblaster. Now the custom tooling required for your job can be put to work days earlier than it could in the past.

Tension-Indicating Bolts

If you are regular readers of ArchNews, you are probably aware we utilize ultrasonic pulse-echo technology for measurement of in-joint bolt tension. While a very powerful tool for joint development and validation, ultrasonics is not an ideal solution for all applications. Find out more in this article.

Comparison of Calibration Techniques for Ultrasonic Tension Measurement

The use of ultrasonic pulse-echo technology for measurement of bolt tension has compelling benefits that require a certain level of experience to be fully realized. We will compare the effectiveness of common calibration methods for use in both the elastic and plastic range of elongation. Find out about our test results in this article.

We're always interested in your feedback, and learning about your joint design and testing challenges. I'd like to hear from you.

Dave Archer
President
Archetype Joint, LLC
248.894.2295
darcher@archetypejoint.com