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FIGURE 5 Acceleration signals in
the time domain (left), envelope
curves in the frequency domain
(right) (© Bosch)

FIGURE 6 Modal analysis: torsion
mode (left), bending mode (right)
(© Bosch)

mum deformation over the plate PIONEERING FOR AUTOMOTIVE REFERENCES
model is given by numerical values. FRP LIGHTWEIGHT DESIGN [1] Monner, H.P.; Rose, M.: Autonomous Composite
Structures. In: Wiedemann, M.; Sinapius, M. (eds.):
The spot at the integrated sensor mod-
Adaptive, Tolerant and Efficient Composite Structures.
ule is interesting. There, the torsion In the form of the integrated SD, the Heidelberg: Springer, 2013, pp. 375-380
mode manifests itself slightly com- acceleration sensor forms an integral [2] Murukeshan, V.M. et al.: Cure Monitoring of
pared to the remaining plate areas. system with the FRP structure. For the Smart Composites Using Fiber Bragg Grating Based
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Equivalent, at this mode the sensor transfer of current sensor concepts, the
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signal does not return a changed struc- integration provides a solution for a pre- [3] Maron, B. et al.: Die vernetzte Karosserie:
tural condition. The maximum spectral cise and permanent fixation of sensors at Funktionsintegrativer Leichtbau mit Hybridgarn-
components at the first maximum are an FRP vehicle body. Moreover, the inte- Textil-Thermoplast-Verbunden. In: Kunststoffe 03
(2016), pp. 46-49
a direct response to the test vibration, gration of the current acceleration sensor
[4] Klein, L.; Middendorf, P.: Functionalized Light-
which was identical for both condi- presents a new use case, without neces- weight Parts: Application of LCM for the Integration
tions. Comparatively, the bending mode sary sensor development. The damage of Automotive Sensors in CFRP Structures. In: Pro-
ceedings of the Regional Conference Graz 2015,
has a higher amount of deformation monitoring can take place as a measure
PPS: 21-25 September 2015. Melville (USA): AIP
at the spot of the sensor module. Thus, after an event during vehicle operation
Publishing LCC, 2015
at this mode the sensor signal is more or as a regular routine check. The gain [5] Klein, L.; Middendorf, P.: Designte Sensorfunk-
sensitive to the structural condition. in knowledge on the condition of the tionalität im Automobilleichtbau mit Faserverbund-
This shows the change at the second vehicle body allows more precise deci- kunststoff (eine Systembetrachtung). In: Wiede-
mann, M. (ed.): Smarte Strukturen und Systeme.
maximum after the damage. sions on maintenance or repair. Against Proceedings of the 4SMARTS Symposium, April
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can be indicated by the integrated SD. times and the cost pressure in the auto- pp. 194-210
[6] Klein, L.: Sensor Systems for FRP Lightweight
The design of the SD also allows a motive sector, the approach is pioneering
Structures. Automotive Features based on Serial
space-saving distribution of several sen- for automotive lightweight design by Sensor Products. In: Sensors 2019, 19(14), 3088;
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