July 16, 2018

An Interview with Steve Kreuzer

1 hour 18 minutes

Welcome Dr Steven Kreuzer!

Before we start, we were asked to mention: “The opinions and views expressed in this episode are those of Steve Kreuzer and do not in any way reflect the opinions and values of Exponent”

Background

Steve and Chris went to high school together, Case Western Reserve together, ended up as roommates together in Austin and now work in similar industries.

0h 1m 23s

He got introduced to biomech via a program at Duke which later lead to grad school at UT Austin.

0h 2m 22s

He work at the (now former) GE appliance division (they were sold to Haier in 2016)

0h 3m 49s

At UT Austin, he worked on the effects of acceleration on cells.

0h 5m 6s

This included understand how proteins unfold.

0h 7m 17s

PhD program

0h 8m 32s

Difficulty of funding sources

0h 8m 39s

Salary of PhD

0h 9m 50s

Lots of simulation work

0h 12m 14s

Pharma seemed like the right path

0h 12m 20s

Exponenet

Ended up at Exponent, wanting to get a hand back into industry.

0h 12m 44s

Lots of people who work there are interdisciplinary

0h 12m 52s

Ended up in Menlo Park doing mechanical engineering work for them.

0h 13m 40s

This included lots of CFD and FEA (links below)

0h 13m 55s

Started working on Consumer Electronics devices

0h 14m 15s

Steve explained the types of companies that call Exponent

0h 17m 12s

Size of companies that call vary, but large companies all the way down to startups.

0h 18m 15s

Exponent deals with more specified problems rather than generics. They don't do design work, it's more working with existing, unique problems.

0h 20m 13s

One example is companies dealing with recalls.

0h 22m 10s

Consulted on the Samsung Galaxy battery fires.

0h 22m 44s

They helped identifying the problem.

0h 23m 47s

Could it have been caught by simulation?

0h 26m 15s

A big piece of prevention is reliability audits.

0h 26m 25s

Another large piece is understanding if things will go wrong by doing accelerated testing, which includes temperature cycling.

0h 28m 10s

Working with Lithium Ion (and other types of batteries)

Steve recommends to always use Battery management units

0h 30m 12s

Want to protect the cell from the environment

0h 30m 52s

18650 packs

0h 31m 51s

Forces on the batteries

0h 33m 47s

Protecting environment from the cell

0h 34m 31s

Failing well

0h 35m 0s

Simulating thermal runaway of batteries

0h 36m 10s

Color maps of stresses using programs like Abaqus

0h 38m 43s

Ties into Solidworks

0h 38m 57s

Finite Element Analysis

0h 39m 15s

Testing allows you to assign material properties

0h 41m 37s

Test at their labs/facilities under a hood

0h 43m 20s

"Exponents model is that we shouldn't do anything that's standardized"

0h 44m 0s

Design an experiment where you recreate the worst case scenario

0h 46m 1s

MatWeb

0h 47m 1s

Reactive vs Proactive

0h 51m 23s

Decision to call Exponent is often based on internal reliability testing

0h 52m 22s

BGAs and working with boards in consumer products

Failures in thermal cycles

0h 54m 32s

Arrhenius Equation

0h 55m 12s

Computational Fluid Dynamics

0h 55m 23s

Was listening to episode with Dave about BGAs

0h 55m 53s

Have looked at the reflow process

0h 57m 11s

Viscoelasticity

0h 57m 24s

Thermal stresses plus drop scenario

0h 59m 24s

Simulating drops of PCBs inside enclosures

1h 1m 9s

How easily a die is getting rid of heat

1h 4m 36s

Human factors aspect of devices

1h 6m 3s

Sony laptop that was burning "laps"

1h 6m 52s

Lithium ion batteries getting thinner

1h 9m 8s

What is the output of CFD research? Suggestions around changes to airflow or design.

1h 11m 29s

Not as much publishing in their industry, because of

1h 13m 19s

Publishing usually happens around educating the public in a field

1h 13m 32s

Contact

Exponent is hiring! But with a caveat...need PhD

1h 15m 54s

You can email Steve directly if you have a problem you want a consultation on.

1h 17m 5s

Reach out to Steve on LinkedIn

1h 17m 27s

Follow him on Twitter if you want some sports updates.

...more

View all episodes

By The Amp Hour (Chris Gammell and David L Jones)

4.9

226226 ratings

July 16, 2018

An Interview with Steve Kreuzer

1 hour 18 minutes

Welcome Dr Steven Kreuzer!

Before we start, we were asked to mention: “The opinions and views expressed in this episode are those of Steve Kreuzer and do not in any way reflect the opinions and values of Exponent”

Background

Steve and Chris went to high school together, Case Western Reserve together, ended up as roommates together in Austin and now work in similar industries.

0h 1m 23s

He got introduced to biomech via a program at Duke which later lead to grad school at UT Austin.

0h 2m 22s

He work at the (now former) GE appliance division (they were sold to Haier in 2016)

0h 3m 49s

At UT Austin, he worked on the effects of acceleration on cells.

0h 5m 6s

This included understand how proteins unfold.

0h 7m 17s

PhD program

0h 8m 32s

Difficulty of funding sources

0h 8m 39s

Salary of PhD

0h 9m 50s

Lots of simulation work

0h 12m 14s

Pharma seemed like the right path

0h 12m 20s

Exponenet

Ended up at Exponent, wanting to get a hand back into industry.

0h 12m 44s

Lots of people who work there are interdisciplinary

0h 12m 52s

Ended up in Menlo Park doing mechanical engineering work for them.

0h 13m 40s

This included lots of CFD and FEA (links below)

0h 13m 55s

Started working on Consumer Electronics devices

0h 14m 15s

Steve explained the types of companies that call Exponent

0h 17m 12s

Size of companies that call vary, but large companies all the way down to startups.

0h 18m 15s

Exponent deals with more specified problems rather than generics. They don't do design work, it's more working with existing, unique problems.

0h 20m 13s

One example is companies dealing with recalls.

0h 22m 10s

Consulted on the Samsung Galaxy battery fires.

0h 22m 44s

They helped identifying the problem.

0h 23m 47s

Could it have been caught by simulation?

0h 26m 15s

A big piece of prevention is reliability audits.

0h 26m 25s

Another large piece is understanding if things will go wrong by doing accelerated testing, which includes temperature cycling.

0h 28m 10s

Working with Lithium Ion (and other types of batteries)

Steve recommends to always use Battery management units

0h 30m 12s

Want to protect the cell from the environment

0h 30m 52s

18650 packs

0h 31m 51s

Forces on the batteries

0h 33m 47s

Protecting environment from the cell

0h 34m 31s

Failing well

0h 35m 0s

Simulating thermal runaway of batteries

0h 36m 10s

Color maps of stresses using programs like Abaqus

0h 38m 43s

Ties into Solidworks

0h 38m 57s

Finite Element Analysis

0h 39m 15s

Testing allows you to assign material properties

0h 41m 37s

Test at their labs/facilities under a hood

0h 43m 20s

"Exponents model is that we shouldn't do anything that's standardized"

0h 44m 0s

Design an experiment where you recreate the worst case scenario

0h 46m 1s

MatWeb

0h 47m 1s

Reactive vs Proactive

0h 51m 23s

Decision to call Exponent is often based on internal reliability testing

0h 52m 22s

BGAs and working with boards in consumer products

Failures in thermal cycles

0h 54m 32s

Arrhenius Equation

0h 55m 12s

Computational Fluid Dynamics

0h 55m 23s

Was listening to episode with Dave about BGAs

0h 55m 53s

Have looked at the reflow process

0h 57m 11s

Viscoelasticity

0h 57m 24s

Thermal stresses plus drop scenario

0h 59m 24s

Simulating drops of PCBs inside enclosures

1h 1m 9s

How easily a die is getting rid of heat

1h 4m 36s

Human factors aspect of devices

1h 6m 3s

Sony laptop that was burning "laps"

1h 6m 52s

Lithium ion batteries getting thinner

1h 9m 8s

What is the output of CFD research? Suggestions around changes to airflow or design.

1h 11m 29s

Not as much publishing in their industry, because of

1h 13m 19s

Publishing usually happens around educating the public in a field

1h 13m 32s

Contact

Exponent is hiring! But with a caveat...need PhD

1h 15m 54s

You can email Steve directly if you have a problem you want a consultation on.

1h 17m 5s

Reach out to Steve on LinkedIn

1h 17m 27s

Follow him on Twitter if you want some sports updates.

...more

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An Interview with Steve Kreuzer

An Interview with Steve Kreuzer

More shows like The Amp Hour

The Changelog: Software Development, Open Source

This Week in Tech (Audio)

Security Now (Audio)

Software Engineering Daily

Talk Python To Me

SpyCast

SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast)

Embedded

Smashing Security

Darknet Diaries

Physics World Weekly Podcast

Practical AI

Hackaday Podcast

Latent Space: The AI Engineer Podcast

Robinson's Podcast