QUALITY TESTING &
PERFORMANCE REPORTS
HALO™ Rollover Occupant Protection System – ISO 3471-2008 Test Report
Safety Engineering International submitted the HALO™ to be tested under the ISO 3471:2008 standard, which specifies the performance requirements for metallic rollover protective structures (ROPS). The test was conducted by Friedman Research Corporation.
F-350 HALO: ISO 3471-2008 Test Report
Vehicle Type: Light duty truck
Manufacturer: Ford
Model Number: F350 crew cab
Date: August 13, 2021
Manufacturer: Safety Engineering International
ROPS: High Attenuation Load Offset (HALO)
Information supplied by manufacturer: Location of DLV: Orthogonal projection of 95th %ile male Hybrid III ATD in driver seat
Test Results and Criteria
Temperature and Materials
The test was performed with ROPS and machine frame members soaked to 20 deg C (material properties defined at ambient temperatures) The Charpy V-notch impact strength requirements for ROPS structural metallic members were tested on a specimen of size 10 mm x 10 mm. The absorbed energy was 40 J at -40 deg C1 Nut property class: 8 Bolt property class: 8.8
Force-deflection curve for loading test
Photo of specimen
Attestation statement
The minimum performance requirements of ISO 3471:2008 were met in this test for a maximum machine mass of 2727 kg. Use of the Finite Element method is an accepted means for demonstrating compliance and performance of structures under static and dynamic loading environments to protect occupants.2,3,4,5
2 Federal Aviation Administration, AC 20-146A – Methodology for Dynamic Seat Certification by Analysis for Use in Parts 23, 25, 27, and 29 Airplanes and Rotorcraft, June 29, 2018
3 European Standard, prEN 16303, Road restraint systems – Validation and verification process for the use of virtual testing in crash testing against vehicle restraint system, 2018
4 Ray et al., NCHRP 22-24, Web-Only Document 179: Procedures for verification and validation of computer simulations used for roadside safety applications, March 2010
5 Euro NCAP, Pedestrian Human Model Certification, Technical Bulletin 24, 2017