Back to basics: Mechanical testing – the tensile test
In the previous article, we discussed hardness testing, and the various methods of hardness testing were illustrated. In this article we discuss the tensile...
Determining tooth thickness of various gear types – Part II
In order to determine the tooth size of a gear after taking into account the backlash allowance, you first must determine what the nominal...
Q&A with Marcel Geurts
What’s a typical day like for you at Neugart?
I’m product manager here at Neugart. In total, we have four product managers on the team....
Determining tooth thickness of various gear types
In order to determine the tooth size of a gear after taking into account the backlash allowance, you first must determine what the nominal...
Back to basics: Hardness testing, Part 2
In last month’s Hot Seat article, we began a discussion on the various methods of mechanical property testing. Overall, we are going to discuss...
Q&A with Don Carlson
What’s a typical day like for you at KA-Wood Gear & Machine?
We have a very experienced team at Ka-Wood Gear that works with...
Roughness measurement: Optical vs. contact stylus profilometry
To date, I have written several articles on contact stylus profilometry. This roughness measurement technique, when applied to gear flanks, is repeatable and reproducible...
Rotorcraft gearbox regulations: LOL (not what you think)
For more than a decade, one of the most intensively researched subjects in aerospace engineering has been LOL. No, we are not talking about...
Q&A with Jack Conway
What’s a typical day like for you at Atlanta Gear Works?
There really is not a typical day. We are an extension of the...
Back to basics: Hardness testing, Part 1
In a series of Hot Seat articles, we are going to discuss the various methods of mechanical property testing. We will be covering hardness...
What is a standard anyway?
There is an old adage that goes: “Everything old is new again.” This is commonly used when a fad — like bell-bottom blue jeans...
Four basic types of fracture mechanisms: Part II
In the previous article, we discussed the fracture surfaces that are apparent for ductile or overload type fractures, and the fractures that occur with...
Q&A with Torsten Schultz
What do you do at NORD?
I’m the president and CEO of NORD for the U.S. Overall, I set the strategic direction of the company....
Understanding dimensional stability in gearing
In the retail community, the term shrinkage is defined as the difference between the value of the physical on-hand inventory minus the expected on-hand...
Roughness measurement tips: Calibration, the razor blade test
In my previous column in Materials Matter, I reviewed the use of the “Scratch Pad” for the overall checking of the contact stylus profilometer’s...
Q&A with Alan Miller
What’s a typical day like for you at BIG KAISER?
As the engineering manager, I help guide the engineering department. I’m also hands-on as we...
Four basic types of fracture mechanisms
When a component fails, the fracture surface of the broken component can tell a great deal regarding the mechanism of failure. It can often...
Roughness measurement tips: The scratch pad
From the perspective of the shop floor environment, the previous Materials Matter column “Roughness Measurement Tips: 2 V 5” discussed the contact stylus 2-micron...
Crossed helical gearing a.k.a. screw gears
A common refrain from my childhood was “if you keep crossing your eyes, they are going to get stuck like that!” It never did...
Roughness measurement tips: 2- vs. 5-micron
I’ve written three articles on gear flank roughness measurement for this magazine (Materials Matter; January 2016 and February 2016, and an issue-focus article in...
