Dr. Steffen Brinckmann

Ruhr University Bochum, ICAMS
Stiepeler Str. 129, 44801 Bochum

Phone: (0234) 32 - 29372
Mobil: (01578) 1974 - 850
Email: Steffen.Brinckmann ( a  ) rub , de

RESEARCH EXPERIENCE

• Multiscale Modeling: Combine Molecular and Dislocation Dynamics into a concurrent multiscale model
• Hydrogen Embrittlement: Simulate hydrogen diffusion and material weakening
• Magnetic Shape Memory Alloys: Build a hierachical model to understand MSMA training
• Thermoelectric generators: Determine creep behavior of novel thermoelectric material

• Tension of nano-pillars: Design and etching of tensile grips; design and production of specimens
• Compression of nano-pillars: Production of nano-pillars in Au and Cu, mechanical testing of these specimens;
  perform novel in-situ deformation and correlate recorded movie to stress-strain curve;
  statistical evaluation of slip events in nano-pillars using self written C++ program

• Invented and applied a first order strain gradient model: Dislocation Density based Strain Gradient Model; analytically predicted power-law like hardening, numerically predicted size effect in porous materials
• Invented and employed a damage model for cohesive surfaces which is based on the microstructural properties of dislocations; numerically predicted experimental observations in fatigue of metals: fatigue threshold, Paris-law fatigue crack growth rate, retardation of crack growth after overload
• Constructed testing equipment and executed experiments on environmental degradation of adhesive bonds; implemented a computational model in the finite element package Abaqus; compared the numerical and experimental results
• Created experimental setup (bought hydraulic press and other supply) and performed compaction experiments on powders using a Material Testing System; performed X-ray measurements and calculated density of powder pellets; built an analytical framework for material property identification; implemented a material model into finite element package Abaqus

EDUCATION

PUBLICATIONS and ORAL PRESENTATIONS AT INTERNATIONAL CONFERENCES

TEACHING EXPERIENCE

• Lectured class (14-50 students),developed and graded exams, decided on grades

• Lectured, graded exams; developed and graded quizzes for a class of 77 students
• Supervised teaching assistant, discussed homework grading, discussed penalty for homework plagiarism
• Held weekly (1 hour) and by request office consultation to discuss homework and student performance

• Lectured class of ~50 students when Prof. Siegmund was absent

• Instructed and assisted ~10 student to implement numerical solutions to physical example problems; debugged their programs
• Quizzed students on their solutions to determine level of understanding of physical and numerical problems

• Prepared and solved mechanical example problems weekly in front of class of ~20 students
• Graded exams

MENTORING

• Weekly discussions on progress; determined tasks and milestones; assisted if problems occured
• Explained mechanics and numerical methods

• Daily discussions on progress; determined tasks and milestones; assisted if problems occured
• Explained mechanics and numerical methods; wrote standard operating procedures
• Initiated creativity by giving freedom for weekly self-determined research

• Daily discussions on progress; determined tasks and milestones; assisted if problems occured and corrected mistakes

WORK EXPERIENCE

• Observation of construction work and discussion of construction procedures with construction supervisor

• Construction work (pouring concrete, building and setting up scaffold) on bridge building sites (water-wayl and train bridge)

COMMUNITY SERVICE

SKILLS