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Home » Blogs » Industrial Heating Experts Speak Blog » Debbie Aliya - Failure Analysis

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Industrial Heating Blog
Learn from leading experts in the thermal processing industry. Read Industrial Heating’s Expert Speak blogs. Helpful and timely technical information from those who know.
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Blog Topics

Dan Herring - Heat Treatment

David Pye - Metallurgy

Dan Kay - Brazing

Debbie Aliya - Failure Analysis

George Vander Voort - Metallography

Thomas Joseph - Intellectual Property

Omar Nashashibi – Government

Reed Miller – Thermal Processing

Recent Comments

definitions HT, passivate

Man Care

Brazing of 2205 Duplex Stainless Steel to 7020 & 5083 Aluminum alloy

grain boundary oxidization

Thanks to the Mike or Mikes!

Debbie Aliya

Tooth Overlay Procedure: A Failure Analyst’s View (part 4)

Debbie Aliya
Debbie Aliya
December 2, 2021

Here's the conclusion to Debbie Aliya's series on a tooth overlay procedure.


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Debbie Aliya

Tooth Overlay Procedure: A Failure Analyst’s View (part 3)

Debbie Aliya
Debbie Aliya
November 11, 2021

On the subject of tooth damage, many of my teeth have gum-line grooves. A friend who is a retired dental technician insisted that gum-line grooves are a result of brushing horizontally and using an excessively hard toothbrush.


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Debbie Aliya

Tooth Overlay Procedure: A Failure Analyst’s View (part 2)

Debbie Aliya
Debbie Aliya
October 19, 2021

After the X-ray seen in Figure 1 (see part 1), they put a little optical camera (pediatric size, for which I was grateful) in my mouth to obtain a 3-D digital model of the remaining tooth shape.


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Debbie Aliya

Tooth Overlay Procedure: A Failure Analyst’s View (part 1)

Debbie Aliya
Debbie Aliya
October 5, 2021

Last month, my right rear-lower molar broke. As shown in Figure 1, the fracture event resulted in a chipped condition. The red arrows show the boundary (edge) of the missing piece.


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091621-Aliya-5

A Materials Engineering Vacation (part 3)

Debbie Aliya
Debbie Aliya
September 16, 2021

Maybe a half a dozen times in my life I have learned something that, in a minute, totally transformed and rearranged everything I thought I knew about a subject that I thought I had previously understood.


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Debbie Aliya

A Materials Engineering Vacation (part 2)

Debbie Aliya
Debbie Aliya
September 7, 2021

On a trip with so many highlights, it’s hard to pick only a few. But if pressured, I would give first prize to the A.E. Seaman Mineral Museum, which is part of Michigan Tech. I literally had to pry my feet from the floor and force myself to move on to the next exhibit. After three hours, I had only seen half of the items. We went back on the same $8 ticket the next day it was open. My colleague was very patient and enjoyed the benches, while I barely noticed my aching feet.

 


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Debbie Aliya

A Materials Engineering Vacation (part 1)

Debbie Aliya
Debbie Aliya
August 16, 2021

One of my colleagues graduated from Michigan Technological University (MTU) in 1986 and had not been back since. He’s a mechanical engineer but has worked his entire career in the foundry industry. As an MTU alum, he gets invited to the school’s events, and that included a geology tour.


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Debbie Aliya

How to Recognize a Fatigue Crack (part 4)

Debbie Aliya
Debbie Aliya
July 7, 2021

Let’s wrap up our discussion on fatigue cracks.


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Debbie Aliya

How to Recognize a Fatigue Crack (part 3)

Debbie Aliya
Debbie Aliya
June 23, 2021

How can we tell if it is a fatigue crack if the most well-known feature of a fatigue crack is not present? Figure 2 shows a tie rod from an injection-molding press. While there are a few faint and indistinct beach marks, we have another indicator: ratchet marks.


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Debbie Aliya

How to Recognize a Fatigue Crack (part 2)

Debbie Aliya
Debbie Aliya
June 15, 2021

Eventually, people figured out that although the nominal stress (i.e., average stress) was low, a sharp corner, a corrosion pit, a scratch or a dent, damage from weld heat or many of a long list of other factors could result in a local area with the actual stress approaching the tensile-stress value. 


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