Airbag

GWP has been active in the airbag industry for 25 years and operates its own airbag laboratory.

Pyrotechnics

» In the ballistic bomb, pressure curves of up to 1,000 bar are measured on propellants ignited according to the GWP method.

» A pressure-dependent burning rate is determined from the pressure curves (Fraunhofer ICT Method).

» From the burning rate, conclusions can be drawn about the nature of the propellant and the internal pressure in gas generators.

Chamber pressure measurements

» Via a measuring hole, drilled from the outside, it is possible to record the internal pressure curve of a gas generator during the burn using a piezo pressure sensor.

» Additionally, the pressure curve can be recorded in a 60L tank.

» During the triggering, the ignition current and ignition voltage are also recorded.

Gases, dusts and noise emissions

» Accredited DIN EN ISO/IEC 17025

» Test according to AKZV01ff, SAE J1794, ...

» Determine 16 gases and more online with FTIR, MS, CLD, NDIR

» Determine dust exposure with Andersen-impactor» Measuring and judging noises

» In the vehicle or in test chambers (e.g. 2,7 m3, 60 l, alpha-cabin)

Functional analysis

» Delaboration of the module from the gas generator up to the heating bridge (permission by § 7 Spreng G.)

» Electrical examination, test on integrity

» Contacts and connectors» Environmental influences and corrosion

Gas generators

» Delaboration of the module from the gas generator up to the heating bridge (permission by § 7 Spreng G.)

» Electrical examination, test on integrity

» Contacts and connectors» Environmental influences and corrosion

Igniters

» Functional reliability of constructions

» Corrosion in the igniter» Homogeneity of the molding material/element distribution

» Meltdown: glass/metal contact

» Contact resistances of pins, jumpers

Cold gas tank

» Weld inspection

» Leak and gas analysis

» Material matchings

» Heat treatment

» Materialography and characterization