Category Archives: Materials testing laboratory

Location, Location, Location

posted November 2019

In a recent Twin Cities Business Magazine article, Plymouth MN was described as a Med-Tech Mecca.  We recognized this almost 25 years ago when we chose to locate our company here. Materials Evaluation and Engineering, Inc. was founded to fill a local need for an independent, high-quality, materials characterization laboratory for advanced materials and critical components.   A quick check of our client list shows we have worked with 75 different companies within the city.

In a 2016 blog post we mentioned a visit from then Mayor, Kelli Slavik, as part of the city of Plymouth’s Plymouth Proud Campaign. The campaign was created to highlight the thriving and diverse Plymouth business community. We continue to value the support of the city and the local business community.

Keyence Digital Light Microscope

Senior Engineer, Dan Grice is seen here completing the installation of the newest microscope in our inspection lab, a Keyence 7000 series digital light microscope. This is the world’s first 4K ultra-high accuracy microscope. Compared to our current model the expanded features of the 7000 series include 20x greater depth of field, measurement tools allowing measurements directly on screen, 3D display to observe surface contours, adaptive lighting and multi-angle observation. The increased speed and resolution of this microscope will be especially beneficial when we facilitate large joint inspections in our lab.



MD&M 2019 | Medtech Show

posted October 2019

MEE will be in the Exhibit Hall of MD&M (Medical Design and Manufacturing)  at the Minneapolis Convention Center Oct 23-24.  This is our 20th year attending the event.  Please stop by and say hello to the MEE staff.  We have a prime corner booth location (#2210) so it should be easy to find us. We appreciate making new connections at MD&M but also enjoy catching up with our current and past customers. Hope to see you there.

Dan Grice, P.E. and Larry Hanke, P.E.

Dan Grice, P.E. and Larry Hanke, P.E. will be presenting technical sessions at the Materials Science & Technology (MS&T) Conference, held in Portland, Oregon on September 29 – October 3.

Dan’s presentation, Hydrogen Embrittlement: Contributions from Material Processing, will provide an overview of material processing operations that contribute to the hydrogen embrittlement failure mechanism and include case studies of hydrogen embrittlement failures for which material processing operations had significant or unusual contributions to the fractures. His presentation will be included in the Process-related Failures session on Wednesday.

Larry’s program, Radiant Tube Heater Failure Analysis and Resulting Changes to NFPA 54 is included in the Failure Prevention session on Thursday. Larry will discuss failure analysis investigations of radiant tube heaters involved in building explosions. The investigations were instrumental in a revision to the National Fuel Gas Code (NFPA 54) changing the requirements for installation of these heaters and demonstrating the potential impact of the failure analysis process to prevent future failures.

MS&T is a long-standing, recognized forum held annually that is organized with cooperation between four materials-related professional societies. At MEE, participation in technical conferences is greater than just completing continuing education credits, we place high value on the importance of keeping up-to-date on best practices and advancing the field of Materials Science.

Materials Evaluation and Engineering, Inc.  is pleased to announce that Henry Ahrenholtz has joined our staff as an Associate Engineer. We hired Henry to support MEE’s  busy materials characterization laboratory.  He has rapidly become skilled in nondestructive testing methods, visual examination, metallographic sample preparation, microstructure examination, and mechanical testing. He has already been involved in two large industrial projects assisting senior engineering staff on the job site and in the laboratory.  We are confident that Henry will be a strong asset to the MEE team.

Henry is from Minnetonka Minnesota and attended Iowa State University, graduating in 2018 with a degree in Materials Engineering with a specialization in polymers. When not at work in the Metallography Lab, Henry enjoys rock climbing and cycling.


Henry Ahrenholtz

Materials Science Camp

posted July 2019

This was MEE’s 13th year as a sponsor of ASM International Materials Science Camp for high school students. ASM Materials Camp utilizes hands-on learning principles of applied math and science for a truly unique, team-based problem solving experience that explores materials science and engineering principles.

The students are assigned a failure analysis project on the first day of camp and spend a day in the laboratories at MEE examining their samples and gathering data.  They prepare their samples in the metallographic lab, view the microstructure using SEM and metallographic microscopes and perform Rockwell hardness tests all under the direction of  industry and education based Materials Mentors.

Three MEE staff, Larry Hanke, Kurt Schenk and Neal Hanke, were camp mentors for the entire week of camp.

Rockwell hardness test lab

Mentor, Kurt Schenk, enjoying the camp experience!

Sample Preparation in the MEE shop

Introduction to Scanning Electron Microscopy

Light Microscopy

Consulting ASM Handbooks

This summer we were fortunate to be able to offer two internship opportunities to materials science students.  Samiha Khan is working with us part time while taking classes at the University of MN in the Materials Science Engineering program. Samiha didn’t start out as a materials science student but after talking with students already in the program and doing a little more research on the profession she says she found it to be a perfect match to her interests. She is looking forward to working in our microscopy labs and will be assisting staff in sample preparation and testing.

Summer Intern at MEE

posted May 2019

Welcome to our  2019 summer intern, Jordan Cornelius. Jordan will be graduating later this year from Iowa State University with a degree in Materials Science Engineering with specializations in metals and ceramics.  Jordan is specifically interested in gaining experience with materials testing and characterization and failure analysis. He sees his time at MEE as a great opportunity to learn about the variety of industries our company partners with from industrial clients to medical device manufacturers.

Jordan Cornelius, MEE summer intern



Microscopy Spring Symposium

posted May 2019

MEE staff to attend Microscopy Spring Symposium

Dieter Scholz and Jason Larson will be attending the Minnesota Microscopy Society’s Annual Spring Symposium on Friday May 3 in St Paul. The topic of this year’s symposium is Non-Traditional and Emerging Microscopy Techniques. MEE is a corporate sponsor of the  MN Microscopy Society and will have a booth at this event. Stop by and say hello to Dieter and Jason and ask about MEE’s expanded laboratory facilities and the new microscopes we have acquired, including the new JEOL IT500HR Scanning Electron Microscope.

Dieter Scholz

Jason Larson