Biofidelity of an original and modified sidiis upper extremity matched cadaver and dummy compression tests.
نویسندگان
چکیده
Approximately 8,000 automobile occupants are killed and 24,000 seriously injured each year in automotive side impact collisions. In order to accurately predict injury of human occupants, the response of automotive side impact anthropometric test dummies must be as biofidelic as possible. The upper arm serves as a load path to the thorax, and the response characteristics of the upper arm can influence the thoracic response in side impact test dummies. Therefore, the purpose of the study is to characterize the compressive response of male and female humeri with all soft tissue attached, an original SIDIIs arm, and a modified SID-IIs arm to evaluate the biofidelity of the side impact dummy arm. A series of compression tests were performed at two dynamic rates, 2.34 m/s and 3.81 m/s, on a total of eight male and female humeri with all soft tissues attached. Matched compression tests were preformed on the original SID-IIs and a modified SID-IIs upper arm segment using a drop tower. The impact direction for all tests was from lateral to medial in order to simulate an automotive side impact collision. In order to correct for the loss in the cadaver arm tissue thickness resulting from the horizontal test orientation, the upper arms of 35 male and 35 female volunteers were measured. The results show that for both rates the modified Sid-IIs arm force vs. compression response was more representative of the cadaver humeri force vs. compression responses than the original Sid-IIs arm. The more realistic response characteristics of the modified Sid-IIs arm could improve the biofidelity of the overall thoracic response in side impact anthropometric test dummies.
منابع مشابه
BIOFIDELITY OF THE SID-IIs AND A MODIFIED SID-IIs UPPER EXTREMITY: BIOMECHANICAL PROPERTIES OF THE HUMAN HUMERUS
Accurate biofidelity for side impact dummies is crucial in order to accurately predict injury of human occupants. One such dummy is the SIDIIs, which represents the 5 percentile human female. A recent area of concern is the biofidelity of the upper extremity of side impact test dummies. Since the upper arm serves as a load path to the thorax, the response characteristics of the upper extremity ...
متن کاملInjury Thresholds and a Measurement Technique for the Thigh and Leg of a Pedestrian Dummy
ABSTRACT The new design of a modified lower limb of the Polar-II pedestrian dummy for enhanced biofidelity requires establishment of an alternative instrumentation to load cells. The objective of this study was to determine injury thresholds for the thigh and leg of the modified dummy, and to establish an alternative measurement technique. FE pedestrian impact simulations were run using full-bo...
متن کاملDriver Lower Extremity Response to Out of Position Knee Airbag Deployment
Lower extremity injuries are the most common injuries for occupants in frontal crashes and account for 45% of all AIS 2+ injuries. Although knee airbags (KAB) have been shown to reduce knee,thigh and hip injuries, their effectiveness as a countermeasure for tibia, foot and ankle injuries remains unclear. A review of 29 frontal crash cases from the Crash Injury Research and Engineering Network (...
متن کاملValidation of a biofidelic LS-DYNA model and comparison vs. a traditional ATD Finite Element model for assessing Knee-Thigh-Hip injuries
An enhanced Finite Element (FE) model of the human Knee-Thigh-Hip (KTH) is presented as a reliable mean for prediction of bone failure mechanism for a frontal knee impact. Improvements made to the original model are reported. The model is validated against a cadaver sled test. An identical finite element impact event was replicated with use of the LSTC dummy. The main terms of comparison were t...
متن کاملThor Advanced Test Dummy - Biofidelity and Injury Assessment
This paper will discuss the advances in biofidelity and injury assessment provided by the THOR Frontal Crash Test Dummy, particularly in regard to use by the aircraft safety industry. Following a brief background on the THOR development project, injury data from the Kegworth crash in 1989 will be presented to exemplify the specific types and severity of injuries which may occur in a commercial ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Biomedical sciences instrumentation
دوره 44 شماره
صفحات -
تاریخ انتشار 2008