The Madison Group

Putting Years of Plastics Engineering Experience To Work For You

2615 Research Park Dr.
Madison, WI 53711
Phone: (608) 231-1907
Fax: (608) 231-2694

Upcoming News and Events

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Free Live Presentation In Rochester,NY!: Preventing Failure by Understanding Why Plastic Parts Fail

November 29, 2018 (5:30-8:00)

Rochester Institute of Technology, Building 78
Presenters: Jeff Jansen

The best way to avoid plastic part failure is to understand the most common causes of failure. This presentation will cover topics essential to understanding plastic failure and present information regarding how and why plastics fail. By avoiding common mistakes it is possible to produce plastic parts that have a superior chance to perform successfully.

Based on having conducted over 1550 failure investigations, a number of the most common causes of plastic failure will be review in order to illustrate this point. These include excessive sharp corners, molded-in residual stress, insufficient drying of molding resin, improper material selection, time factors, and chemical contact.

This presentation will focus on practical techniques to avoid future failures. The participants will gain a better understanding why plastic components fail, and how to avoid future failures by applying the knowledge learned.

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To Register Email Brett Blaisdell

Thermal Analysis in Failure and Compositional Analysis

December 6, 2018, 10 AM CDT
Presenter: Jeffrey Jansen

Thermal analysis is an important group of tests used in the analysis of plastics and other polymeric materials. It consists of a family of well-established techniques that evaluate material properties as they change with temperature, time, and ambient environment under conditions of thermal programming. The results of thermal analysis tests provide qualitative and quantitative information about the material being evaluated. In particular, this information is important to address plastic failures or in characterization of the material composition and physical properties.

The upcoming webinar on thermal analysis will introduce the four primary techniques:

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Creep Failure of Plastics

February 14, 2019, 10 AM CDT
Presenter: Jeffrey Jansen

Creep is the tendency of a polymeric material to deform permanently under the influence of constant stress, as applied through tensile, compressive, shear, or flexural loading. It occurs as a function of time through extended exposure to levels of stress that are below the yield strength of the material. Given sufficient time, this can lead to creep rupture, the failure within a material as a result of continuously applied stress at a level below the short-term tensile strength. Plastic materials are particularly prone to creep rupture through exposure to static stresses, and a recent study indicates that 22% of plastic failures are associated with creep.

The relatively high frequency of creep failure is linked to the widespread lack of awareness and understanding of the effects of time on polymeric materials, particularly at the design stage; the unique difference in time dependence between polymeric materials and metals; and the increasing use of plastic materials in diverse applications with longer time demands.

The concept of creep is extremely important to manufacturers and designers of plastic components.

The upcoming webinar will cover:

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Basic Rubber Technology

April 11, 2019, 10 AM CDT
Presenter: Jeffrey Jansen

This webinar will introduce the attendees to the basics and most important topics related to thermoset rubber compounds. About 15 billion kilograms of rubber are produced ever year. Rubber finds its way into wide range of applications in the automotive, medical, appliance, electrical, and chemical industries. As a class of materials, rubber has many useful properties because of its unique molecular structure. These include being soft and relatively flexible, high ultimate elongation coupled with good elastic recovery, useful over a wide temperature range, and good chemical resistance.

A part of the presentation the following topics will be covered:

To Register Email Sue Wojnicki

Past Events

Here is a short list of events that you just missed. If you are interested in having The Madison Group come and speak to your team, please feel free to Contact us

Plastic Part Failure: Analysis, Design & Prevention (UW-Milwaukee)

October 15-17, 2018
Presenters: Jeffrey Jansen, Dr. Antoine Rios, Dr. Javier Cruz, and Erik Foltz

Dive into a broad range of topics essential to understanding and preventing plastic failure. The most efficient and effective approach to plastic component failure is performing a systematic failure analysis following a scientific method. Someone once said, "if you don't know how something broke, you can't fix it," highlighting the importance of a thorough understanding of how and why a product has failed. With emphasis on practical problem-solving techniques, the course will utilitze case studies to comprehend key aspects of plastic failure and prevention. Gain a better understanding of why plastic components fail, and how to avoid future failures by applying the knowledge learned.

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Ductile to Brittle Transitions in Plastics

October 18, 2018, 10 AM CST
Presenter: Jeffrey Jansen

The objective of a failure investigation is to identify the mechanism and cause of the failure. The characterization of the failure mode such as, fatigue, overload, environmental stress cracking, etc... is often straightforward through fractographic methods. However, the determination of the cause of the failure is in many cases less apparent. Plastic materials are utilized in many applications because of their unique property set, including their ductile response to applied stress. This ductility is associated with the viscoelastic nature of polymers and is attributed to their unique molecular structure. In spite of that inherent ductility, most plastic components fail through one of the many brittle fracture modes. Experience has shown that less than 5% of failures are associated with ductile overload. The remainder represent brittle fractures of normally ductile materials. Thus, within evaluations of plastic component failures, the focus of the investigation frequently turns to identifying the nature of the ductile to brittle transition. This relatively brittle response to stress is evident through the examination and characterization of the fracture surface morphology.