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This paper approaches failure analysis in electronics under design for reliability (DfR) point of view. Some real cases illustrate how stress/strength interference (SSI) plays an important role to understand the component failure under the perspective of strength variation within a lot, from lot to lot and from manufacturer to manufacturer and likewise, the stress applied may vary with temperature, vibration etc. Also, the paper stresses the necessity to go beyond classical reliability practice, generally associated with minimizing catastrophic failures.

This paper presents an approach for Six Sigma strategies to reduce the occurrence of failure mechanisms. In general terms, there are two ways to reduce the failures: a) shifting or tuning - DMAIC approach or b) shrinking - DCOV approach. When shifting or tuning, we move the mean output away from the failure mode boundary and when shrinking, we reduce the variability of the output. Also, the paper illustrates with a case study - Cargo truck door opening effort check arm - where demand and capacity distributions had its distance to failure mode increased leading to high-quality low-cost alternative in vendor tooling.

NVH (Noise, Vibration and Harshness) is an important vehicle attribute and focus in every Product Development at OEM'S (Original Equipment Manufacturers). Pass-by Noise is one of these aspects in order to improve noise vehicle as a whole. As a result, this paper will show opportunities that Pass-by Noise test can get in a new development of Commercial Vehicles, presenting the methodology, NVH improvements, Quiet Truck and Frequency Analysis as well as Robustness of Noise Package Development. Moreover, the presentation will consider all the requirements and the advantages that Pass-by Noise can accomplish in a new Sound Package Development to meet a new Conama Resolution. The focus on this topic is to meet a new Governmental Regulation (CONAMA 272/2000) and consequently improve overall noise quality showing procedures that will accomplish targets of NVH. Conclusions will present the advantages of the proposed method regarding to timing and cost and real cases examples will be mentioned.