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An Evaluation of Laminated Side Window Glass Performance During Rollover
Technical Paper
2007-01-0367
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this study, the occupant containment characteristics of automotive laminated safety glass in side window applications was evaluated through two full-scale, full-vehicle dolly rollover crash tests. The dolly rollover crash tests were performed on sport utility vehicles equipped with heat-strengthened laminated safety glass in the side windows in order to: (1) evaluate the capacity of laminated side window safety glass to contain unrestrained occupants during rollover, (2) analyze the kinematics associated with unrestrained occupants during glazing interaction and ejection, and (3) to identify laminated side window safety glass failure modes. Dolly rollovers were performed on a 1998 Ford Expedition and a 2004 Volvo XC90 at a nominal speed of 43 mph, with unbelted Hybrid II Anthropomorphic Test Devices (ATDs) positioned in the outboard seating positions. Vehicle dynamics, occupant kinematics, and glazing failure modes were evaluated through: on-board instrumentation, analysis of on-board and off-board high speed video and film, a survey of the evidence in the rollover debris field, and post-test inspection of the vehicle, ATDs, and glazing. Laminated side window safety glass did not prevent complete ejection of the ATDs. Five of the six ATDs in the Expedition were completely ejected from the vehicle, and 3 of the 4 ATDs were fully ejected in the XC90 test. Containment of the two ATDs that were not completely ejected was unrelated to glazing contact; the laminated window adjacent to each ATD vacated the window opening and both were partially ejected during the roll sequence. Side window glass fracture and failure was observed in association with ATD loading, ground contact deformation, and combinations thereof. On the basis of the performance observed in this study, it is concluded that heat-strengthened trilaminate glass is not a suitable candidate for occupant containment during rollover. Comparison of these full-scale rollover tests to prior laboratory-based evaluations of laminated side glass demonstrates that the prior studies fail to account for several aspects of the rollover environment, which contribute significantly to glazing loading, fracture, and failure.
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Citation
Luepke, P., Carhart, M., Croteau, J., Morrison, R. et al., "An Evaluation of Laminated Side Window Glass Performance During Rollover," SAE Technical Paper 2007-01-0367, 2007, https://doi.org/10.4271/2007-01-0367.Also In
SAE 2007 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V116-6; Published: 2008-08-15
Number: V116-6; Published: 2008-08-15
Safety: Rear Impact, Rollover, Side Impact, Crashworthiness, Air Bags and Bumper Systems
Number: SP-2117; Published: 2007-04-16
Number: SP-2117; Published: 2007-04-16
References
- American National Standard for Safety Glazing Materials for Glazing Motor Vehicles and Motor Vehicle Equipment Operating on Land Highways - Safety Standard
- Atelsek, P. et al. NHTSA Advanced Glazing Research Team 1995 “Ejection Mitigation Using Advanced Glazing, A Status Report, November 1995,”
- Bahling, G.S. et al. 1990 “Rollover and Drop Tests - The Influence of Roof Strength on Injury Mechanisms Using Belted Dummies.” SAE Report No. 902314 Society of Automotive Engineers Warrendale, PA
- Clark, C.C. Sursi, P.L. 1984 “The Ejection Reduction Possibilities of Glass Plastic Glazing,” SAE Technical Paper 840390 Society of Automotive Engineers Warrendale, PA
- Clark, C.C. Sursi, P.L. 1989 “Rollover Crash and Laboratory Tests of Ejection Reduction by Glass Plastic Side Windows and Windshields,” SAE Technical Paper 890218 1989
- Daniel, R.P. 1970 “Vehicle Interior Safety Constraint Systems,” SAE Technical Paper 700423 Society of Automotive Engineers Warrendale, PA
- Glass & Glazing Forensics 2006 “U.S. Availability of Vehicles with Laminated Side Glass by Model Year (Annual U.S. ≥ Sales 1000 Units).”
- Glass & Glazing Forensics 2006 “U.S. Availability of Vehicles with Laminated Side Glass for 2006 Model Year (10/1/05 thru 5/31/06) 8 months.”
- Kramer, R.N. et al. 2006 “A Comparative Study of Automotive Side Window Occupant Containment Characteristics for Tempered and Laminated Glass,” SAE Report No. 2006-01-1492 Society of Automotive Engineers Warrendale, PA
- Carter, J.W. Habberstad, J.L. Croteau, J.J. 2002 “Comparison of the Controlled Rollover Impact System (CRIS) With the J2214 Rollover Dolly Methodology.” SAE Report No. 2002-01-0694 Society of Automotive Engineers Warrendale, PA
- Moffatt, E.A. et al. 1997 “Head excursion of seat-belted cadaver, volunteers and Hybrid III ATD in a dynamic/static rollover fixture.” SAE 973347 41st Annual Stapp Car Crash Conference Society of Automotive Engineers Warrendale, PA
- Moffatt, E.A. Cooper, E.R. Orlowski, K.F. Marth, D.R. Croteau, J.J. Carter, J.W. 2003 “Matched-pair Rollover Impacts of Rollcaged and Production Roof Cars Using the Controlled Rollover Impact System (CRIS).” SAE Report No. 2003-01-0172 Society of Automotive Engineers Warrendale, PA
- Newberry, W. Carhart, M. et al. 2006 “A Computational Analysis of The Airborne Phase of Vehicle Rollover: Occupant Head Excursion and Head-Neck Posture,” SAE 2005-01-0943 Society of Automotive Engineers Warrendale, PA
- NHTSA, NHTSA Advanced Glazing Research Team 1996 “Public Meeting for Advanced Glazing Research” February 1 1999
- Orlowski, K.F. Bundorf, R.T. Moffatt, E.A. 1985 “Rollover Crash Tests - The Influence of Roof Strength on Injury Mechanisms SAE Report No. 85174 Society of Automotive Engineers Warrendale, PA
- Patrick, L.M. 1995 “Glazing for Motor Vehicles - 1995,” Wayne State University SAE Report No. 952717 Society of Automotive Engineers Warrendale, PA
- Patrick, L.M. 1996 “A Primer on Automotive Glazing - Part 1,” Automotive Engineering July 1996
- Patrick, L.M. 1996 “A Primer on Automotive Glazing - Part 2,” Automotive Engineering August 1996
- Title 49 of the Code of Federal Regulations (Transportation) “Federal Motor Vehicle Safety Standard No. 205; Glazing Materials.”
- Title 49 of the Code of Federal Regulations (Transportation) “Federal Motor Vehicle Safety Standard No. 208; Occupant Crash Protection.”
- Willke et al. NHTSA Advanced Glazing Research Team 1999 “Ejection Mitigation Using Advanced Glazing: Status Report II,”
- Willke et al. NHTSA Advanced Glazing Research Team 2001 “Ejection Mitigation Using Advanced Glazing: Final Report,”
- Willke et al. 2003 “Status of NHTSA's Ejection Mitigation Research Program,” Proceedings of the 18th International Technical Conference on the Enhanced Safety of Vehicles (ESV) Nagoya, Japan May 2003