Wyniki wyszukiwania - BazTech

1

Correlation Between Pin Misalignment and Crack Length in THT Solder Joints

Molnar A., Benke M., Gacsi Z.

Archives of Metallurgy and Materials

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2017

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Vol. 62, iss. 2B

1063--1066

EN

In this manuscript, correlations were searched for between pin misalignments relative to PCB bores and crack propagation after cyclic thermal shock tests in THT solder joints produced from lead-free solder alloys. In total, 7 compositions were examined including SAC solders with varying Ag, Cu and Ni contents. The crack propagation was initiated by cyclic thermal shock tests with 40°C / +125°C temperature profiles. Pin misalignments relative to the bores were characterized with three attributes obtained from one section of the examined solder joints. Cracks typically originated at the solder/pin or solder/bore interfaces and propagated within the solder. It was shown that pin misalignments did not have an effect on crack propagation, thus, the solder joints’ lifetime.

2

The Development of Monitoring Devices in the „Man-Clothes” System Based on Modern Microcontrollers

Molnar A., Gerasimov V., Kurytnik I. P.

Pomiary Automatyka Robotyka

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2016

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R. 20, nr 2

11--15

EN

In this paper the design of an experimental sample of a portable electronic device for assessment of the basic parameters of the „Man-Clothes” System based on modern wireless microcontroller technology has been discussed and suggested. The mobile measuring system based on TI MSP430 microcontrollers to track the parameters of “smart clothes” has been presented.

PL

W artykule przedstawiono wyniki badań eksperymentalnych mobilnych urządzeń elektronicznych (wearable) dla monitoringu podstawowych parametrów system „człowiek-odzież” w oparciu o mikrokontroler TI MSP430.

3

Modification of Catalytic Activity of Cu-Ti Amorphous Alloy Ribbons by Cathodic Hydrogen Charging

Pisarek M., Janik-Czachor M., Kędzierzawski P., Molnar A., Rac B., Szummer A.

Polish Journal of Chemistry

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2004

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Vol. 78 / nr 9

1379-1389

EN

Since hydrogen is known to be one of the most efficient embrittling atomic species, cathodic hydrogen charging was used in an attempt to modify the structure, composition and morphology of Cu-Ti amorphous alloy ribbons. Various methods of analysis such as X-ray electron microanalysis, SEM, XRD and electrochemistry, with varying lateral resolution and different information depths, as well as catalytic tests, were used to follow the changes within the ribbons and at the surface, and their interrelations with catalytic activity. The activity in a test reaction (dehydrogenation of 2-propanol) was enhanced up to a conversion level of 66%, which is much higher than that obtained with all other pre-treatments previously applied.