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Based on Aluminum Honeycomb technology, the M-PDB barrier (mobile progressive deformable barrier—Euro NCAP V1.1 TB022) is used by car manufacturers and test laboratories worldwide to assess motor vehicle passenger protection in the offset frontal impact test procedure according to the 2020 European New Car Assessment Programme (Euro NCAP).
The frontal offset impact replicates a collision with another vehicle. In this test, 50% of the test vehicle, on the driver’s side, initially makes contact with a crushable aluminum honeycomb barrier at an impact speed of 50 kph for both the test vehicle and the M-PDB barrier mounted on the trolley.
The M-PDB barrier consists of three stacked aluminum honeycomb blocks. The front and rear blocks offer constant levels of force with deflection; the middle block has been processed to give a progressively increasing level of force with increasing deflection. The rear block is bonded to an aluminum back plate, which is also used to mount the impactor. The three blocks are bonded to three aluminum sheets, and the entire impactor is covered by an aluminum skin (cladding) riveted to the front face.
Honeycomb Block A – Aluminum 3003 – cell size 6.35 mm
– 568 mm x 1000 mm x 90 mm Crush strength of 1.711 MPa +0/-10%
Honeycomb Block B – Aluminum 3003 – cell size 9.50 mm
– 568 mm x 1000 mm x 450 mm Progressive Crush strength according to Euro NCAP Tech. Spec.
Honeycomb Bumper – Aluminum 3003 – cell size 6.35 mm
– 1220 mm x 200 mm Crush strength of 1.586 to 1.793MPa
Honeycomb Block C – Aluminum 3003 – cell size 19.10 mm
– 568 mm x 1000 mm x 250 mm Crush strength of 0.342 MPa +0/-10%
Back plate – Aluminum of series AlMg2 to AlMg3 with hardness between 50 and 67 HBS
– H 645 mm x W 1000 mm x T3.0 mm
– Upper mounting flanges of 75 mm high, vertical
– Lower mounting flanges of 53 mm high, bent through 90 degrees towards the rear
– Two 30 mm side flanges shall be bent through 90 degrees towards the honeycomb.
Intermediate plates – Aluminum 5754 H111
– T 0.5 mm
Contact plates – Aluminum 1050A H24
– T 1.5 mm
Cladding Sheet – Aluminum 5754 H22
– H 645 mm x W 1000 mm x T0.8 mm
– Upper mounting flanges of 75 mm high, vertical
– Lower mounting flanges of 53 mm high, bent through 90 degrees towards the rear
– Two 30 mm side flanges shall be bent through 90 degrees towards the honeycomb
Rivets:
Twenty 6 mm diameter blind rivets to connect the contact and cladding plates
Adhesive
Two-part Polyurethane
A complete testing procedure for certification of aluminum honeycomb is performed in-house according to EuroNCAP Mobile Progressive Deformable Barrier Face Specification version 1.1 from October 2018 – TB022 and in accordance with the procedure defined in NHTSA TP-214D. The aluminum honeycomb blocks are processed such that the force deflection-curve when statically crushed, is within the corridors defined for each of the 3 blocks.
The AXAC M-PDB is manufactured according to Euro NCAP Mobile Progressive Deformable Barrier Face Specification version 1.1 from October 2018 – TB022, in compliance with the Euro NCAP 2020 protocol frontal offset test.
AXAC has an approved IS09001 Quality Management System, which demonstrates a commitment to supplying customers with the highest quality products and services.
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