Medical Device and Manufacturing

posted October 2017
MEE CEO, Larry Hanke, at previous MD&M event

MEE CEO, Larry Hanke, at previous MD&M event


Medical device development calls for innovation, precision and critical thinking – MEE matches your requirements with advanced materials characterization, analytical methods and experienced and informed materials strategies.

Look for us in the exhibit hall of the upcoming MD&M event November 8-9 at the Minneapolis Convention Center.  Materials Evaluation and Engineering staff will be there to meet and greet and answer any questions you might have about our services.

We will be at Booth #1304 (first booth if you enter through the central doors of the exhibit hall.)

New Engineer Added to MEE Staff

posted August 2017

Jason Larson (2)


Welcome Jason Larson.

Jason, who joined the MEE staff as a Senior Engineer, brings with him 10+ years of experience in failure analysis laboratories, supporting the electronics and medical device industries. His degree in computer engineering combined with project experience analyzing failure modes in microelectronic components expands on MEE’s capabilities and range of engineering expertise.



Filed under: About MEE,

Materials Science Camp 2017

posted June 2017

Last Friday we had thirty high school students at MEE  as part of a week-long Materials Science Camp sponsored by the MN Chapter of ASM International.  Under the direction of  industry and education based “Materials Mentors”, students got some real world experience solving a materials failure analysis project. Three of our staff, Larry Hanke, Kurt Schenk and Neal Hanke, and our summer intern, Atte were  camp mentors. This was MEE’s eleventh year sponsoring the camp.

IMG_0036 IMG_0071


Larry Hanke just returned from a visit to the Ottawa Chapter of ASM International. As a member of the ASM Board of Trustees, Larry has been invited to visit many local chapters. These visits are an important way to keep local chapters updated on what is going on in the organization at the national level and for the Board to hear about issues and concerns of the local chapters.  He enjoyed meeting the Ottawa chapter members and hearing about their involvement in Teacher Materials Camp.

ASM Ottawa chapter visit

Nasseh Khodaie and Larry Hanke

Larry presented at the meeting a talk on Forensic Materials Engineering For Product-Reliability Litigation.  In addition, Chapter Chair, Nasseh Khodaie, arranged for Larry to take a tour of the National Research Council (NRC), the Government of Canada’s premier research organization.

Filed under: ASM, forensic engineering,

Welcome to our summer intern, Atte Kadoma. Atte just completed her freshman year at Iowa State University where she is working towards a degree in Materials Engineering. We first met Atte in 2014 when she attended ASM-MN Materials Camp as a high school student.  MEE is a corporate  sponsor of Materials Camp and the students spend a day here getting hands-on experience in a materials testing laboratory.  We even found a photo in the Materials Camp photo archives of Atte at the Rockwell hardness tester!

Atte has long been interested in pursuing an engineering degree but said her experience at Materials Camp definitely influenced her decision to choose materials science engineering as her major. She has expressed a particular interest in failure analysis.

We were very pleased to be able to offer Atte an internship this summer and look forward to working with her.


Rockwell hardness tester at 2014 ASM-MN Materials Camp


Filed under: About MEE,


Senior Materials Engineer, Dan Grice, will be speaking at the Minnesota Microscopy Society Spring Symposium this Friday, May 5th on microbiologically-influenced corrosion.

Although one of the least-known and least-understood corrosion mechanisms, microbiologically-influenced corrosion (MIC) is among the most damaging in terms of total cost to society. Recent estimates indicate that the annual cost of corrosion in the United States is around $300 billion, and as much as 20% of that cost can by attributed to MIC. For the most part, microorganisms do not actually consume the metal, but rather create an environment that fosters the corrosion processes. Microorganisms, including bacteria, fungi, and microalgae, can accelerate the rates of corrosion processes or change the dominant corrosion mechanism through their presence and metabolic processes. MIC has been reported for almost all significant metal alloy systems and in applications including seawater, potable water, hydrocarbon fuels, food processing and sewage. This presentation will cover the mechanism for MIC, some of the significant organisms, methods for diagnosing the problem, and some of the mitigation techniques

Filed under: About MEE,

MEE CEO and Principal Engineer, Larry Hanke, will be the keynote speaker at the UK Association of Fire Investigators summer training conference in London, England on July 3, 2017.

Larry and MEE engineer, Neal Hanke, recently presented a similar session at the 2017 International Association of Arson Investigators training conference in Las Vegas.

The following key concepts were covered in their presentation:

  1. A fundamental understanding of how structural and electrical materials behave at elevated temperatures.
  2. How material behaves under stress.
  3. How to evaluate component failures that may contribute to fire and explosion
  4. A better understanding of how to identify electrical arcing
  5. How anomalous material behavior can lead to incorrect conclusions about the conditions during a fire

Larry  has  assisted with the investigation of hundreds of fires and explosions during his 40 year career as a Metallurgical Engineer.  In 1995 he founded Materials Evaluation and Engineering, Inc.  which has become one of the leading material testing and failure analysis laboratory in the Upper Midwest.

Neal  has been conducting materials evaluation investigations and testing with MEE. since 2011. Recently, he has become involved in the research of materials characterization for arc mapping in structural and automotive fires.

Filed under: About MEE,

Failure Analysis Presentation

posted February 2017

Larry Hanke and Dan Grice will be presenting at the  Minnesota Section of ASME (American Society of Mechanical Engineers) Spring Symposium on March 15 in Plymouth MN.

Wind Generator Blade Failure

Wind Generator Blade Failure

The title of this year’s symposium is “Failure, Test and Modeling Tools in Engineering Design”. Larry and Dan’s presentation will cover advice on field practices to prepare for failure analysis, laboratory test methods for evaluation of mechanical behavior and corrosion, failure analysis tasks useful for product improvement efforts, examples of the analysis of field failures and laboratory test specimens, and the application of test data to product development.


Graphitic Corrosion Case Study

posted January 2017

We were asked to determine the mechanism and possible causes of corrosion of a cast iron sanitary sewer pipe. Metallurgical testing and EDS analysis pointed to graphitic corrosion. With graphitic corrosion there is no reduction in the size or shape of the pipe but the strength of the material is severely reduced.

Cross section of vent pipe.

Cross section of vent pipe.

The Vent Pipe case study explains in more detail how this type of corrosion mechanism is identified, causes and our recommendations to the client.

All of the case studies on our website come from our files. They have been edited to present a more casual writing style than our formal reports, but generally they follow the structure of our reports and give an overview of the findings and conclusions from an investigation.

New P.E. at MEE

posted January 2017

Congratulations to MEE staff member, Neal Hanke, P.E., who just received his professional engineering license. To become licensed, engineers must complete a four-year college degree, work under a Professional Engineer for at least four years, pass two intensive competency exams and earn a license from the state licensing board. To retain their licenses, PE’s must continually maintain and improve their skills throughout their careers. A PE license indicates a commitment to hard work, integrity and dedication to the profession.

Learn more about MEE’s engineering and technical staff on the “About Us” page of our website.



Filed under: About MEE,