Brake Pedal Response and Occupant Kinematics During Low Speed Rear-End Collisions

2010 ◽  
Author(s):  
Matthew A Ivory ◽  
Christopher J Furbish ◽  
Michelle R Hoffman ◽  
Eric R Miller ◽  
Russell L Anderson ◽  
...  
Keyword(s):  
Brake Pedal ◽  
Low Speed ◽  
Occupant Kinematics

Human Occupant Kinematics in Low Speed Side Impacts

2002 ◽  
Author(s):  
Thomas F. Fugger ◽  
Bryan C. Randles ◽  
Jesse L. Wobrock ◽  
Judson B. Welcher ◽  
Daniel P. Voss ◽  
...  
Keyword(s):  
Low Speed ◽  
Side Impacts ◽  
Occupant Kinematics

Vehicle and Occupant Kinematics in Low-Speed Override/Underride Collisions

2003 ◽  
Author(s):  
Thomas F. Fugger ◽  
Bryan C. Randles ◽  
Judson B. Welcher ◽  
Thomas J. Szabo
Keyword(s):  
Low Speed ◽  
Occupant Kinematics

The Effect of the Head-to-Head Restraint Distance on Occupant Kinematics during Low-Speed Rear-End Crashes

2018 ◽  
Author(s):  
William R. Scott ◽  
Rawson Wood ◽  
Lars Reinhart ◽  
Herbert Guzman ◽  
Alejandra Barraza
Keyword(s):  
Low Speed ◽  
Head Restraint ◽  
Occupant Kinematics

Occupant kinematics in low-speed frontal sled tests: Human volunteers, Hybrid III ATD, and PMHS

2012 ◽  
Vol 47 ◽  
pp. 128-139 ◽  
Author(s):  
Stephanie M. Beeman ◽  
Andrew R. Kemper ◽  
Michael L. Madigan ◽  
Christopher T. Franck ◽  
Stephen C. Loftus
Keyword(s):  
Low Speed ◽  
Human Volunteers ◽  
Hybrid Iii ◽  
Occupant Kinematics

Occupant Kinematics and Loading in Low Speed Lateral Impacts

2019 ◽  
Author(s):  
Christopher Furbish ◽  
Judson Welcher ◽  
Justin Brink ◽  
Brian Jones ◽  
Scott Swinford ◽  
...  
Keyword(s):  
Low Speed ◽  
Occupant Kinematics

scholarly journals A Method for Quantifying Automobile Brake Creep Groan Intensity Based on Friction-Induced Vibration and Noise

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Lijun Zhang ◽  
Jianfeng Wu ◽  
Dejian Meng
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Vibration Mode ◽  
Subjective Evaluation ◽  
Linear Regression Analysis ◽  
Brake Disc ◽  
Brake Pedal ◽  
Low Speed ◽  
Test Conditions ◽  
Friction Induced Vibration

To quantify the intensity of automobile brake creep groan, both experimental and analytical studies are innovatively conducted on the friction-induced vibration and noise of the disc brake in this paper. Experimentally, three factors, brake disc initial temperature, terrain, and gear position, are comprehensively contemplated to design six different test conditions, based on which a creep groan vehicle road test is conducted. Depending on the subjective evaluation and statistical analysis of the annoyance degree caused by vibration and noise in the starting and braking process under different test conditions, the influence of each factor on creep groan intensity is obtained. By processing the brake caliper and lower suspension arm acceleration and the interior sound pressure signals acquired in the test, the occurrence conditions and transient dynamic characteristics of creep groan are explored. One of the creep groan vibration modes is triggered by the rapid removal of the force exerted on the brake pedal when the vehicle starts at an extremely low speed, which presents intermittent impact and chaotic characteristics. The other vibration mode shows periodic harmonic characteristics, whose energy is concentrated on specific frequencies in the form of frequency doubling. This vibration mode occurs when continuously maintaining a low brake oil pressure or slowly releasing the force exerted on the brake pedal during the vehicle low-speed starting process, the velocity-displacement phase-plane portrait of which shows a stable limit cycle of stick-slip motion. Analytically, four vibration indexes and four noise indexes are established to evaluate the intensity of creep groan, the validity of which is verified by linear regression analysis. Finally, by combining all effective indexes, multiple linear regression analysis is performed, based on which the mapping relationship between the subjective evaluation of creep groan and effective indexes is obtained. The results demonstrate that the combination of the logarithmic vibration dose value of maximum brake caliper acceleration pulse and the loudness of interior noise can accurately describe the annoying degree caused by creep groan. The regression model can quantify and predict creep groan intensity of the test vehicle under different test conditions, which has guiding significance for engineering applications.

scholarly journals The Effects of Seated Position on Occupant Kinematics in Low-speed Rear-end Impacts

2005 ◽  
Author(s):  
Orion P. Keifer ◽  
Peter D. Layson ◽  
Bradley C. Reckamp
Keyword(s):  
Low Speed ◽  
Occupant Kinematics

New ultrastructural findings about Borrelia burgdorferi by cryofixation, negative staining, thin sectioning and scanning techniques

1990 ◽  
Vol 48 (3) ◽  
pp. 582-583
Author(s):  
S. F. Hayes ◽  
M. D. Corwin ◽  
T. G. Schwan ◽  
D. W. Dorward ◽  
W. Burgdorfer
Keyword(s):  
Lyme Disease ◽  
Borrelia Burgdorferi ◽  
Structural Characterization ◽  
Negative Staining ◽  
Low Speed ◽  
Thin Sectioning ◽  
Ultrastructural Findings

Characterization of Borrelia burgdorferi strains by means of negative staining EM has become an integral part of many studies related to the biology of the Lyme disease organism. However, relying solely upon negative staining to compare new isolates with prototype B31 or other borreliae is often unsatisfactory. To obtain more satisfactory results, we have relied upon a correlative approach encompassing a variety EM techniques, i.e., scanning for topographical features and cryotomy, negative staining and thin sectioning to provide a more complete structural characterization of B. burgdorferi.For characterization, isolates of B. burgdorferi were cultured in BSK II media from which they were removed by low speed centrifugation. The sedimented borrelia were carefully resuspended in stabilizing buffer so as to preserve their features for scanning and negative staining. Alternatively, others were prepared for conventional thin sectioning and for cryotomy using modified procedures. For thin sectioning, the fixative described by Ito, et al.

Sign in / Sign up

Export Citation Format

Share Document