Category Archives: Dr. Ron

Materials expert Dr. Ron Lasky is a professor of engineering and senior lecturer at Dartmouth, and senior technologist at Indium Corp. He has a Ph.D. in materials science from Cornell University, and is a prolific author and lecturer, having published more than 40 papers. He received the SMTA Founders Award in 2003.

Demonstrating Zero Defects In SMT Production?

Folks, let’s see how Patty is doing at Ivy U … Patty had to admit that she really liked being a professor at Ivy University. No, that wasn’t strong enough; she was ecstatic. The combination of the stimulating and collegial … Continue reading

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Alloy Density Calculator Generates Most Interest of All Blog Posts

Folks, In the nearly 10 years that I have been blogging, I am continually surprised by the interest in a spreadsheet I created that calculates alloy densities.  I get about numerous inquiries a year on this topic.  We just renewed the … Continue reading

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Comparing Two Wiebull Distributions

Folks, Let’s look at Patty’s last day of class … As she was driving north to teach her statistics class, Patty was sad to see her stint at Ivy U come to a close. She was even more nervous about … Continue reading

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Weibull Analysis at Ivy U

Folks, Let’s check in on how Patty is doing at Ivy U. Patty was nearing the end of her teaching stint at Ivy U. Only a few more classes remained. She had to admit that she was sad to see … Continue reading

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‘Patty’ in the Real World

Folks, Every year, the wonderful folks at PCM host a visit from my class on manufacturing processes and provide a real-world tour of an electronics assembly facility. Our relationship has resulted in the class producing a video on electronics assembly. … Continue reading

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Sample Size is Important in Weibull Analysis Too

Some time ago I posted on “The Curse of the Early First Fail” and “Interpreting Weibull Plots.” Both of these posts related to using Weibull analysis to make sound engineering decisions. Recently, a reader asked if sample size is important … Continue reading

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An Example of Cpk and Non Normal Data In Electronics Assembly Soldering

Folks, Let’s see how Patty is doing after teaching her first class at Ivy U… Patty arrived at home after teaching her first class at Ivy U and she couldn’t contain her excitement. For the next couple of hours her … Continue reading

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Cpk Can Only be Calculated from Data that are Normally Distributed

Folks, Let’s look in on Patty…. Patty was really nervous. As a matter of fact, there was no time she remembered being this nervous. The cause of her nervousness? She was going to teach a series of classes at Ivy … Continue reading

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My BBC Interview on Tin Pest

Imagine my excitement when Laurence Knight of the BBC contacted me to see if I was interested in being interviewed on the topic of tin pest, with a secondary discussion on tin whiskers. After a 30-minute phone call, it appeared … Continue reading

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The Importance of Oxygen Barrier in Solder Pastes

Folks, Pity the solder scientists of the late 1970s and early 1980s. SMT was an emerging technology and the world wanted to buy solder paste. However, the only experience many solder scientists had was wave soldering. In wave soldering, the … Continue reading

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