In this article, metallurgist, Dawn DiMarco provides an overview of the processes involved in a typical metallurgical failure analysis. Her discussion describes various properties of metals that can…
Dawn DiMarco is a career Metallurgist with extensive experience in failure analysis, metallurgical consulting, electron microscopy and materials testing on a wide range of materials and industries including aerospace and automotive. With over 30 years of experience analyzing failures in aerospace components, rotating hardware, and automotive parts, Dawn is well qualified to investigate a broad range of product and material failures.
Dawn has performed failure and root cause analyses on numerous metal components. She has also evaluated failures in elastomer compounds and rubber-to-metal bonded parts. Dawn is experienced in electron and optical microscopy, x-ray analysis, non-destructive inspection, mechanical property evaluation, spectrometry, fractography and metallography. Her material failure experience includes a variety of manufacturing processes, including compression molding, metal forging, casting, cutting, grinding, milling, heat treating, painting, plating, and CNC machining. Dawn has also implemented many quality assurance processes to identify and remediate processing defects that contribute to component failures.
Both in industry and as a metallurgy expert, Dawn has unique experience analyzing corrosion and fatigue failures in rotating components such as automotive wheels, fasteners, aerospace gears, precision bearings, and rotor head components. She has worked with military and international material and product supplier teams.
Dawn earned her B.S. in Ceramic Engineering from Rutgers University College of Engineering and attended Drexel University's graduate program in Materials Engineering with an emphasis on Physical and Mechanical Metallurgy. Dawn has been awarded two patents.
Career Metallurgist with extensive experience in failure analysis, metallurgical consulting, electron microscopy and materials testing on a wide range of materials and industries including aerospace and automotive. Over 25 years’ experience analyzing failures in aerospace components, rotating hardware, and automotive parts.
Associate
2016 to presentProvide technical investigations, analysis, reports, and testimony toward the resolution of commercial and personal injury litigation involving failure analysis.
Chief Metallurgist
Materials Laboratory Manager
Responsible for leading a team of chemists, elastomer engineers, test lab engineers and laboratory technicians in the development of aluminum wheels, rubber formulations, and coatings for military and consumer product applications. Responsible for overseeing all aspects of materials laboratory operations including metallurgical and rubber laboratory. Directs and manages the materials testing, operation, maintenance and repair of lab equipment.
Chief Metallurgist
2004 to 2005Performed failure analyses on metallic components from a variety of industries, including aerospace, automotive, biomedical, and petroleum refining for manufacturers, suppliers, vendors and consumers. Experienced in metallurgical analyses using Scanning Electron Microscopy and Energy Dispersive X-Ray Analysis (SEM/EDS) systems. Investigated and provided analysis and consultation regarding fastener failures, material properties, corrosion and manufacturing processing problems such as heat treatment issues. Performed metallurgical testing as well as day-to-day operation of metallurgical lab equipment.
Senior Technical Specialist—Materials & Process Engineering
Metallurgical Laboratory and Metallurgical Staff Engineer
Performed metallurgical evaluations and failure analysis of various critical helicopter components including rotor head, transmission, and landing gear of military rotorcraft.
Materials Engineer
1989 to 1994Worked with the Army, Air Force, NASA, and ARPA, to provide a coordinated approach to the development of advanced components for fighter/attack and subsonic/transport aircraft engines. Ensured transition of these components to future Navy systems. Maintained a role as the recognized focal point in the technologies associated with engine materials. Programmatically and technically managed advanced materials programs and ensured transition to future Navy systems. Supported the Technology Demonstrator Engine and Advanced Aircraft Programs: JTDE, JTAGG, F-22, F-18E/F, STOVL, and JAST. Provided technical direction in Navy fleet hardware improvements and maintain a role as Navy focal point for materials design, test and evaluation.
Rutgers University College of Engineering New Brunswick, NJ, B.S. in Ceramic Engineering, 1989
Drexel University College of Engineering; Materials Engineering Department
Graduate Level
Structure and Properties of Metals
Structure and Properties of Ceramics
Phase Equilibria
Mechanical Behavior of Solids
Structure and Properties of Polymers
Introduction to Composite Materials
Thermodynamics of Solids
Fracture Mechanics I
Experimental Techniques of Materials
Diffusion of Solids
Kinetics
Advanced Engineering Mathematics I
Defense Acquisition Management University
Systems Engineering Management
Rensselaer Polytechnic Institute
Fracture Mechanics
The University of Tennessee Space Institute (UTSI)
Aero-Propulsion Systems, Technology, Test and Evaluation
Cleared SECRET 1989-1994
Wear Resistant Wheel Coating and Method, US 8,333,878, published December 18, 2012
Zeta Tau Alpha alumna
v. 06/30/20
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