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Engineering Consultants


Edgar Zapata, P.E.


Edgar Zapata has been with Anderson & Associates since 1988.  Edgar is the company president and also the fracture mechanics and fatigue testing expert with additional experience in failure analysis, stress analysis and has served as an expert witness.

He holds both bachelor and Master of Science degrees in mechanical engineering from Texas A&M University.  His thesis focused on fracture toughness testing.  A licensed professional engineer, he is an ASM Houston chapter past chairman and is active in ASTM Committee E8 on Fatigue and Fracture.

His publications include “A Metallurgical Failure Analysis of a Domestic Water Pump Impeller” in Engineering Failure Analysis, Vol. 1, and "Fatigue Cracking of a Welded Roll" Case Studies for Fatigue Education in ASTM STP 1250.

Andrés Rodela, Ph.D, P.E.

Vice President of Engineering

Andrés is a registered professional engineer in Texas (Lic. #127892) and holds a B.S in Metallurgical and Materials Engineering from UT El Paso and a Doctor of Philosophy in Materials Science from Rice University.  He joined Anderson & Associates in 2016 and his primary role is conducting failure analysis investigations.  He has also overseen the advanced mechanical testing division of the company and has managed 3rd party legal testing jobs.  The bulk of his experience centers on failures in the oil & gas and petrochemical industries.


He is an active member in ASM, ASTM, TMS, and SPE.

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