Characterization of Occupant Lower Extremity Behavior During Moderate-to-High Speed Rear Impacts

By LTU Biomedical EngineeringComments Off

Characterization of Occupant Lower Extremity Behavior During Moderate-Eric Meyerto-High Speed Rear Impacts

Steven Rundell, Allison Guiang, Brian Weaver, Eric G. Meyer

Date Published: 2013-04-08

Paper Number: 2013-01-0222

DOI: 10.4271/2013-01-0222

Abstract:

Injury potential to the neck has been studied extensively for rear-end impacts. The capacity for injury to other body regions, such as the lower extremities, has not been previously explored. The objective of the current study was to characterize the forces and motions experienced in the lower extremities during moderate-to-high speed rear-end impacts.

The current study utilized publicly available rear-end crash tests. Forty-two 50 km/hour, 20% offset, 180° barrier rear-end impacts were used. The occupant lower extremity behavior was analyzed for 63 ATDs, and included 42 driver’s seats, 8 front passenger seats, and 13 right-rear seat scenarios.

Three consistent events were identified during each test, in the following sequence; 1. initial compressive femur force, 2. secondary tensile femur force, and 3. rearward pelvis acceleration peak. In addition to pelvic contact with the seatback, in some cases the loading in the femur was influenced by contact between the seat pan and the back of the tibia just below the knee. The larger, male occupants experienced higher magnitudes of femur compression as the vehicle was impacted from the rear. The smaller, female occupants experienced predominately femur tension. Pelvic acceleration data corroborated these findings. Femur forces were consistent between both legs, indicating that there was little torsion applied to ATDs during the rear-end crash tests.

The current study indicates that occupant anthropometry and seat pan geometry play a significant role in loading of the lower extremity in a rear-end impact.

For more information: http://www.sae.org/servlets/techSession?EVT_NAME=B405&SCHED_NUM=202026&REQUEST_TYPE=SESSION_DETAILS&GROUP_CD=TSESS

Faculty Journals

2013 Life Sciences Poster Display

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Events, Networking, Scholarships

Changing sagittal plane body position during single-leg landings influences the risk of non-contact anterior cruciate ligament injury

By LTU Biomedical EngineeringComments Off
Eric Meyer
Yohei Shimokochi, Jatin P. Ambegaonkar, Eric G. Meyer, Sae Yong Lee, Sandra J. Shultz

Abstract

Purpose: To examine the effects of different sagittal plane body positions during single-leg landings on biomechanics and muscle activation parameters associated with risk for anterior cruciate ligament (ACL) injury.

Methods: Twenty participants performed single-leg drop landings onto a force plate using the following landing styles: self-selected, leaning forward (LFL) and upright (URL). Lower extremity and trunk 3D biomechanics and lower extremity muscle activities were recorded using motion analysis and surface electromyography, respectively. Differences in landing styles were examined using 2-way Repeated-measures ANOVAs (sex × landing conditions) followed by Bonferroni pairwise comparisons.

Results: Participants demonstrated greater peak vertical ground reaction force, greater peak knee extensor moment, lesser plantar flexion, lesser or no hip extensor moments, and lesser medial and lateral gastrocnemius and lateral quadriceps muscle activations during URL than during LFL. These modifications of lower extremity biomechanics across landing conditions were similar between men and women.

Conclusions: Leaning forward while landing appears to protect the ACL by increasing the shock absorption capacity and knee flexion angles and decreasing anterior shear force due to the knee joint compression force and quadriceps muscle activation. Conversely, landing upright appears to be ACL harmful by increasing the post-impact force of landing and quadriceps muscle activity while decreasing knee flexion angles, all of which lead to a greater tibial anterior shear force and ACL loading. ACL injury prevention programs should include exercise regimens to improve sagittal plane body position control during landing motions.

For more information: http://link.springer.com/article/10.1007/s00167-012-2011-9

Knee Surgery, Sports Traumatology, Arthroscopy

April 2013, Volume 21, Issue 4, pp 888-897

Faculty Journals

Orchid Orthopedic Solutions Job Opportunity

By LTU Biomedical EngineeringComments Off

Position Type: Regular Full-Time
Location: Southfield, MI
Department: Engineering

Summary

Responsible for supporting the Orchid Southfield Engineering team with prints, Customer Requirement Sheets, and a variety of engineering-related projects in accordance with FDA regulations, cGMPs, standard operating procedures and safety standards.

Essential Duties, Tasks & Responsibilities

  • Updates and releases customer requirement sheets (CRS) to Production.
  • Proactively manages changes in project scope, identifies potential crises and develops contingency plans.
  • Provides support to Engineering Team with designing, project management (both existing and new projects), quality, and process development.

Qualifications

  • Completion of two to three years of college, pursuing an Engineering degree.
  • Must have the ability to prioritize and manage multiple tasks.
  • Must have the ability to read blueprints and pay strict attention to detail.
  • Must have the ability to work well in a fast-paced environment with quickly-changing priorities, to meet customer deadlines.
  • Must be equally comfortable working individually and as a member of a team.
  • Must be able to generate creative solutions to identified problems.
  • Must be able to work independently to organize customer prints, Customer Requirement Sheets, and a variety of projects.
  • Must be computer literate, proficient in AutoCAD, MS Excel (VBA and Macros), MS Word, and possess programming skills.

Physical Demands

  • Requires stooping, standing, kneeling, up to 20 pounds of force to move and/or lift objects.
  • Requires frequent and repetitive bending, stretching, stooping, scooping and circular arm and hand motions.
  • Requires standing and/or walking one-half to three-quarters of the time.
  • Requires manual dexterity, using hands to finger, handle or feel two-thirds or more of the time.
  • Requires reaching with hands and arms two-thirds or more of the time.
  • Requires close, distance, color, and peripheral vision, depth perception and the ability to focus.

Work Environment

  • Responsible for performing duties in an environment that is free from discrimination, intimidation, coercion or harassment, including sexual harassment.
  • Some exposure to airborne particles, dirt, dust.
  • Must adhere to company’s and facility’s safety practices by performing work safely and in accordance with established standards.

Submit a resume with salary expectations to:  resumes@orchid-ortho.com

 

Career Opportunities

2013 Spring Engineering & Technology Job Fair

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Monday, April 22, 2013
2:00 – 7:00 p.m. 
Suburban Collection Showplace, Novi

Tired of going to cookie-cutter job fairs and meeting companies that have nothing to do with your career interest? Looking to get in front of cutting-edge engineering and IT-related companies? Then, don’t miss the chance to attend The Engineering Society of Detroit (ESD) Engineering and Technology Job Fair.

Recognized for being the premier recruitment opportunity for professionals and students of all disciplines, the spring job fair will feature more than 40 of Michigan’s best engineering, technology and management companies hiring for over 1,200 positions.

Cost: Free for Engineering Society of Detroit members. Non-members: $10 if registered by April 15, 2013; $15 if registered after that date. The cost includes a one-year membership to ESD. (Offer available to first-time members only.)

Click here for more information or to register online, or call 248-353-0735.

Career Opportunities, Events, Networking

COMPES Professional Development Conference

By LTU Biomedical EngineeringComments Off

Saturday, April 13, 2013
8:15am – 4:45pm – with Catered Lunch
Nissan Technical Center 
39001 Sunrise Drive
Farmington Hills, MI 48331

Theme:     “Thriving on Diversity”
Including: Maintaining Technical Strength, Soft Skill Development, and Understanding Challenges around Diversity in the Workplace

Benefits to All:
Network with our target attendance of 300+ professionals
Opportunity to attend breakout sessions on technical topics
Access to resources to aid in career planning and development

Benefits to Volunteers and Corporate Sponsors:

Volunteers:
Network with a diverse core planning team
Gain experience planning a large scale event

Corporate Sponsors:
Opportunity to further train and support diverse workforce
Support minority engineering societies through COMPES PDC

Click here for more information

Events, Networking

Mind over Matter: Empowering the Paralyzed through Brain-Computer Interfaces

By LTU Biomedical EngineeringComments Off

Leigh HochbergLeigh R. Hochberg, MD, PhD

Neurologist, engineer, and co-director of BrainGate at Brown University

Wednesday, April 3, 2013
7:30 p.m., dessert reception follows 
Mary E. Marburger Science and Engineering Auditorium (S100)  

Abstract: Sending emails, playing computer games, drinking coffee. These activities have been impossible for people who are “locked in” their bodies – awake and alert, but unable to move or communicate due to brainstem injuries, strokes, or illnesses like ALS. Until now. Leigh R. Hochberg and his fellow researchers are developing brain-machine interfaces that allow paralyzed people to accomplish these feats and much more.

Hochberg and his colleagues found that even though the pathways connecting the brain to the rest of the body, such as the spinal cord, have been broken, the brain can still send the signals that control movement. They developed BrainGate, a neural interface system that plugs into the brain, picks up those signals, and sends them to a computer that translates them into moving a cursor or controlling a computer keyboard or robot arm. Paralyzed people can literally move objects by thinking about them! Find out how this groundbreaking research could revolutionize the lives of the disabled.

Events

A message from The Bill & Melinda Gates Foundation

By adminComments Off

Grand Challenges Explorations (GCE)

Grand Challenges Explorations (GCE), an initiative to encourage innovative and unconventional global health and development solutions, is now accepting grant proposals for its latest application round. GCE is an agile, accelerated grant initiative with a short two-page application an no preliminary data required. Applications can be from anywhere in the world; at any experience level; in any discipline; and from any organization, including colleges and universities (undergraduates, graduate students, professors, administrators), government laboratories, research institutions, non-profit organizations and for profit companies.

All you need is a good idea addressing one of our topic challenges, write a two-page proposal describing how you will test it, and you could receive $100,000 to do so! Really!

www.grandchallenges.org/explorations

Proposals for this round are now being accepted online until May 7, 2013 on the following topics:

*The “One Health” Concept: Bringing Together Human and Animal Health for New Solutions

*Increasing Interoperability of Social Good Data

*Develop the Next Generation of Condom

*New Approaches for Detection, Treatment, and Control of Selected Neglected Tropical Diseases

*Labor Saving Strategies and Innovations for Women Smallholder Farmers

Initial grants will be US $100,000 each, and projects showing promise will have the opportunity to apply for additional funding of up to US $1 million. Full descriptions of the new topics and application instructions are available at:

www.grand challenges.org/explorations. (Click on the “Read Round 11 topics” on the right side of the page.)

Please note that we run two rounds of Grand Challenges Explorations (GCE) grant opportunities per year with multiple topics each round. Interested parties ca sign up here to receive e-mail updates and new topic announcements:

http://www.grandchallenges.org/about/Pages/StayUpdated.aspx?Source=ThankYou.aspx

Grant Opportunities

Register Now for the OHRP Research Community Forum (RCF)

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Oakland University Research Community Forum

On May 2, 2013, the Office for Human Research Protections (OHRP), the Oakland University, and the Beaumont Health Center are co-sponsoring an OHRP Research Community Forum (RCF) entitled, “An Educational Conference on Strategies for Optimizing the Protection of Human Participants in Research,” at the Oakland University located in Rochester, Michigan. The RCF is featuring a dynamic agenda and sophisticated faculty.

Register by March 25 to receive the Early Bird Registration of $150

Keynote Address:  “PI Responsibilities” by John Gibbons, M.D., Case Western Reserve

Plenary Session:  “OHRP Update” by Elyse I. Summers, J.D., OHRP

12 Breakout Sessions:

  1. Alternative IRB Models
  2. Working with Students – as investigators, as participants, and in classroom research
  3. International Research
  4. Best Practices for IRB Chairs and IRB Members (includes succession planning and IRB mission creep)
  5. What do Participants Understand?  Informed Consent and the Research Subject Advocate
  6. Planning for the Unexpected – Part 1:  Cognitively Impaired Subjects
  7. Data Security, Confidentiality, Privacy – Part 1:  Social Media and New Technologies
  8. Audits: Making it Work for Everyone – Part 1:  The IRB
  9. Facilitating Compliance with IRB and FCOI Requirements
  10. Planning for the Unexpected –Part 2: Prisoners, Employees, and Non-English Speakers
  11. Data Security, Confidentiality, Privacy – Part 2:  Internet Research
  12. Audits:  Making it Work for Everyone – Part 2:  The Investigator

Ask the Feds Panel

Click here for program and registration information!

 

 

Events, Networking

3 Summer Internships in Optics

By LTU Biomedical EngineeringComments Off
RigakuAuburn Hills, MI
 
 
Instrumentation Department

Time: Summer 2013
Duration: Flexible

Nature of the assignment
Develop and characterize precision polishing process for x-ray crystal optics.

Major tasks include

  • Assistance in operating flat and cylindrical lapping-polishing machines
  • Documenting specifics of applied technological procedures, and results of metrological assessment of achieved surface
  • Strict following of the clean room protocol and maintenance/cleaning procedures of the equipment
  • Performing crystal measurements on the x-ray diffractometer
  • Present and discuss results to the project manager and set goals for the next procedures

The qualified candidate should have

  • Experience with Microsoft Office 2010, in particular MS Word and MS Excel
  • Understanding and experience in dimensional measurements of precision parts
  • Basic background in physics and engineering

 

New Technology and Product Development Department

Time: Summer 2013
Duration: Flexible

Nature of the assignment
Develop material-dependent laser cutting processes for x-ray optics fabrication and implement the developed processes as part of the system routine.

Major tasks include

  • Operating a micro-machining system to cut various thin dielectric materials, including silicon and glass
  • Conduct parameter study of the micro-machining process to optimize process results
  • Analyze micro-machined parts with various instruments, including optical measurement microscopes
  • Document parameter study and results
  • Discuss and present results to members of the development team at Rigaku Innovative Technologies
  • Perform maintenance and implements upgrades on the micro-machining system

The qualified candidate should have

  • Experience with Microsoft Office 2010, in particular MS Word and MS Excel
  • Understanding and experience in dimensional measurements of precision parts
  • Basic experience in computer programming
  • Basic understanding of optics and lasers
  • Basic knowledge of microscopy and experience using optical microscopes

Additional experience in the following areas would be helpful

  • Basic mechanical design experience
  • Working with CAD/CAM software
  • Programming of CNC machines

 

Engineering Department

Position: Design Intern

Job Description
Work with the engineering design team to assist in designing mechanical components/system. The intern hired for this position should expect to learn the design process and document control.

Responsibilities

• Work with engineers to finalize design and detail drawings
• Assist with drawing & documentation coordination
• Design documentation release and control
• Engineering Change Control
• Process Documentation

Requirement

• Applicant should be mechanical engineering majors with abilities in MS Office and CAD tools
• Unigraphics NX6 or above required
• Mechanical design concept and 3D modeling is essential

 

Application
All interested candidates should submit a resume/CV to Arlene Pollock at arlene.pollock@rigaku.com.

 

 

Career Opportunities
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