Marcantonio Catelani, Lorenzo Ciani, Matteo Venzi
Maintainability Allocation assessment in complex systems

High maintainability becomes a fundamental requirement of most manufacturing products and system maintainability performance represents a key factor in many manufacturing fields. The paper focus on a procedure to obtain maintainability requirements of a complex system and compares the methods to achieve the best fitting. The first part of the paper focuses on maintainability allocation procedures: failure rate-based allocation method, trade-off of failure rate and design featurebased allocation method, fuzzy maintainability allocation based on interval analysis and time characteristic-based maintainability allocation models. The second part shows a case study on a generic system containing a redundant architecture with three different MTTR objective of the overall system in order to test the proposed method.

Zoltán Rózsás, Zsolt Szalay
Extension of telemetry system

The most important problem of electric vehicles is the energy storage. Currently the system components are ready for mass production, the cost of energy storage, and energy density is limited by the capacity of these types of vehicles. The present study aimed to implement a battery monitoring system in to an F2000 electric formula car. Based on the real-time monitoring capability, the control system can continuously check the voltage of the battery. Monitoring of battery systems is a critical importance to maintain reliable operation of electric vehicles. In addition of fault diagnosis the charge of the battery, the status of the battery cells, measure of the load (current consumption) and also the load variation in time (peaky, constant) can be monitored real-time.

Zoltán Rózsás, András Háry, Zsolt János Viharos
Multivariable Process Modell For Complex Vehicle Systems Under Extreme Load Environment

Vehicle industry is facing two megatrends nowadays: alternative drives and autonomous vehicles. Extreme loads have crucial importance inside these trends, too. Unforeseen events happening in real life can be considered as special form of extreme loads, this is the key novelty of the paper together with the presentation that the classical 6 sigma approach applied typically e.g. in production environments can be used to describe this special form of extreme loads. Various examples represent the applicability of this proposed concept like extreme loads at vehicles of heavy weight & low speed (tractor), light weight and high speed (formula car) and autonomous vehicles. Finally, a concrete vehicle route in a city was analyzed with evaluation of unforeseen events highlighting the advantages of the proposed concept.

Patrick Scholz, Daniel Peters, Florian Thiel
Security Concepts for Software in Measuring Instruments

In the age of the Internet of Things and Industry 4.0, more and more embedded systems are connected through open networks, which also concerns measuring instruments under legal control (e.g. smart meters). Therefore, cyber-security for measuring instruments is becoming increasingly important. In this paper, possibilities to design secure measuring software running on general-purpose operating systems are analyzed according to legal requirements set up by European Directives, e.g., the Measuring Instruments Directive (2014/32/EU), which define the mandatory security level. Concrete security concepts for Windows (Mandatory Integrity Control) and Linux (SELinux and AppArmor) are described.

Veruscka Mannoni, Cinzia Gesumundo, Silvia Giamberardini, Giorgio Padula, Maria Rosaria Milana
Food Contact Articles: Impact Of Uncertainty Contributions In Compliance Testing

Food contact articles must be compliant to applicable regulations on food safety. In the migration testing different sources of uncertainties can be characterized. In a case study on disposable gloves the contributions to the uncertainties to the final results are analysed.