Temperature Control for Standard Tension Tests of Metallic Materials

Gang Shen

Temperature Control for Standard Tension Tests of Metallic Materials

Titel in Übersetzung: Mehrzonentemperaturregelung für den Warmzugversuch von Metallen

Gang Shen

Lehrstuhl für Automation und Messtechnik (530)

Publikation: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Diplomarbeit

Abstract

Der Zugversuch für metallische Werkstoffe ist eine Standardprüfung, um die Spannungs-Dehnungskurve mit Bruchdehnung, Dehnung und Einschnürung des Probenquerschnitts bei Raumtemperatur und erhöhter Temperatur zu bestimmen. Für diesen Test wird die Probe in einem speziellen Ofen erhitzt. Die Probentemperatur an mehreren Messstellen muss dabei möglichst exakt einer vorgegebenen Solltemperatur entsprechen. Durch getrennte Ansteuerung von drei Heizzonen müssen Temperaturdifferenzen auf der Probe ausgeglichen werden, die durch Konvektion, Wärmeleitung und Wärmestrahlung verursacht werden. In der vorliegenden Arbeit wird ein Regelalgorithmus entwickelt, der den hohen Anforderungen an die Temperaturstabilität von maximal +/- 3 Grad entspricht. Die Regelung wird in einem industriellen Regelgerät als Software implementiert. Nach der Erprobung im Labor wird die Einrichtung in einem Prüflabor zur Qualitätssicherung in der Stahlproduktion angewendet.

Titel in Übersetzung	Mehrzonentemperaturregelung für den Warmzugversuch von Metallen
Originalsprache	Englisch
Qualifikation	Dipl.-Ing.
Betreuer/-in / Berater/-in	O'Leary, Paul, Betreuer (intern) Rath, Gerhard, Mitbetreuer (intern)
Datum der Bewilligung	27 Juni 2008
Publikationsstatus	Veröffentlicht - 2008

Bibliographische Notiz

gesperrt bis null

Schlagwörter

Zugversuch Hochtemperaturofen Temperaturmessung Regelung PID

Dieses zitieren

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title = "Temperature Control for Standard Tension Tests of Metallic Materials",

abstract = "Tension test of material is a common experiment to determinate the yield tensile strength, elongation, and reduction area of the specimen at normal or higher temperature. The accurate test requires to keep the temperature of the whole specimen to be equal to a desired temperature. In the actual situation it is not possible to keep the whole specimen at the target temperature during the vertical tension test without any temperature control. The reason is that the air will move from bottom to top when it is heated and the difference temperature of the whole specimen will bigger than 10 grad. Recent quality standard require temperatures tolerances of +/- 3 grad. Topic of the thesis is to develop a control algorithm to keep the temperature at the target level within the desired tolerance. The algorithm is implemented in the software of an industrial controller. It is tested in the laboratory and finally applied in tension test stand in a quality control laboratory.",

keywords = "Tension test Heating Furnace Thermocouple Temperature measurement Temperature Control PID, Zugversuch Hochtemperaturofen Temperaturmessung Regelung PID",

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TY - THES

T1 - Temperature Control for Standard Tension Tests of Metallic Materials

AU - Shen, Gang

N1 - embargoed until null

PY - 2008

Y1 - 2008

N2 - Tension test of material is a common experiment to determinate the yield tensile strength, elongation, and reduction area of the specimen at normal or higher temperature. The accurate test requires to keep the temperature of the whole specimen to be equal to a desired temperature. In the actual situation it is not possible to keep the whole specimen at the target temperature during the vertical tension test without any temperature control. The reason is that the air will move from bottom to top when it is heated and the difference temperature of the whole specimen will bigger than 10 grad. Recent quality standard require temperatures tolerances of +/- 3 grad. Topic of the thesis is to develop a control algorithm to keep the temperature at the target level within the desired tolerance. The algorithm is implemented in the software of an industrial controller. It is tested in the laboratory and finally applied in tension test stand in a quality control laboratory.

AB - Tension test of material is a common experiment to determinate the yield tensile strength, elongation, and reduction area of the specimen at normal or higher temperature. The accurate test requires to keep the temperature of the whole specimen to be equal to a desired temperature. In the actual situation it is not possible to keep the whole specimen at the target temperature during the vertical tension test without any temperature control. The reason is that the air will move from bottom to top when it is heated and the difference temperature of the whole specimen will bigger than 10 grad. Recent quality standard require temperatures tolerances of +/- 3 grad. Topic of the thesis is to develop a control algorithm to keep the temperature at the target level within the desired tolerance. The algorithm is implemented in the software of an industrial controller. It is tested in the laboratory and finally applied in tension test stand in a quality control laboratory.

KW - Tension test Heating Furnace Thermocouple Temperature measurement Temperature Control PID

KW - Zugversuch Hochtemperaturofen Temperaturmessung Regelung PID

M3 - Diploma Thesis

ER -