Mechanical Engineering

Contact Information

Office:
Higgins Laboratories, 207
Phone: +1-508-831-6168
Fax: +1-508-831-5680
lados@wpi.edu

Diana A. Lados

Research Interests

  • Fatigue, fatigue crack growth, fracture
  • Design and optimization of materials for fatigue and fatigue crack growth resistance in automotive, aerospace, marine, and military applications
  • Light metals (traditionally cast and semi-solid processed)
  • Advanced microstructure characterization and microstructure-performance relationships optimization
  • Physical metallurgy aspects of solidification processes of cast alloys
  • Impact of post-solidification operations (heat treatment) on mechanical properties, fatigue, fatigue crack growth, and fracture behavior of materials
  • Alloy/process development from fundamentals to production
  • Traditional and novel techniques to measure residual stress and new methods to compensate for its presence
  • Evaluate plasticity contributions to fatigue crack growth and fracture toughness and introduce elastic/plastic growth analyses
  • Closure and long-crack to small-crack correlations in fatigue crack growth
  • Fracture mechanics concepts and their application to residual stress and crack closure corrections
  • "On-line" residual stress, plasticity, and closure corrections techniques
  • Develop appropriate/compatible fatigue life prediction models
  • Powder metallurgy
  • Novel, forensic, and historic materials

Education

  • BS, Polytechnic University of Bucharest, 1997
  • MS, Polytechnic University of Bucharest, 1997
  • MS, Southern Illinois University, 1999
  • PhD, Worcester Polytechnic Institute, 2004

Featured Publications

  • D.A. Lados, D. Apelian, and J.F. Major, "Fatigue Crack Growth Mechanisms at the Microstructure Scale in Al-Si-Mg Cast Alloys: Mechanisms in Regions II and III", to appear in Metallurgical and Materials Transactions A.
  • D.A. Lados, D. Apelian, and J.K. Donald, "Fracture mechanics analysis for residual stress and crack closure corrections", International Journal of Fatigue (in press).
  • D.A. Lados, D. Apelian, and J.K. Donald, "Effect of Asymmetric Residual Stress on the Fatigue Crack Growth Behavior of Cast Al-Si-Mg Alloys"; to appear in Metallurgical and Materials Transactions A.
  • D.A. Lados, D. Apelian, and L. Wang, "Quenching Modes and Residual Stress Levels in Cast Al-Si-Mg Alloys: Mechanisms and Effects on Static and Dynamic Properties"; to appear in the Journal of Materials Processing Technology, 2006.
  • D.A. Lados, D. Apelian, and J.K. Donald, "Fatigue Crack Growth Mechanisms at the Microstructure Scale in Al-Si-Mg Cast Alloys: Mechanisms in the Near-threshold Regime", Acta Materialia, 2006 (in press).

Professional Highlights

  • 1st Prize - Scientific Session Contest, Bucharest, Romania, 1996
  • Best Graduate Student Award (sef de promotie - Polytechnic University of Bucharest), 1997
  • ASM Chet Inman Award Scholarship, 1999-2000
  • American Foundry Society - Aluminum Division Award, 2000
  • Sigma Xi Graduate Research Scientific Award, 2001
  • Axel Madsen Scholarship Award - Center for Powder Metallurgy Technology, 2003
  • Finalist Bodycote Paper Prize Competition 2004, UK
 
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