Experimental analysis of stress fields of rotating structural elements by means of reflection photoelasticity

Frankovský, Peter; Ostertag, Oskar; Ostertagová, Eva; Trebuňa, František; Kostka, J.; Výrostek, Marek

doi:10.1364/ao.56.003064

Cited by 10 publications

(3 citation statements)

References 11 publications

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“…1 and are coordinates of these points as well as resulting values of principal stresses σred in the sample rotor. Values of these stresses were determined in two different ways: experimentally my means of reflection photoelasticity and numerically with the use of finite element method [12,13].…”

Section: Discussionmentioning

confidence: 99%

Distorsion of Isochromatic Fringes in the Process of Stress Measurement in Structural Part by Photoelasticimetry

Frankovský

Ostertag

Delyová

2018

Strojnícky Časopis - Journal of Mechanical Engineering

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In the article we show the possibility of distorting the results of the experiment by photoelasticity path, in case the isochromatic fringe patterns are recorded by the camera. The recording of the color spectrum may be distorted by inappropriate selection of the recording medium, which is reflected by different types of aberrations. Transferring a record to a computer allows you to automate the experiment process, thus saving time to work with isochromatic fringes. As an example, we present the experimental determination of the stresses of the rotor with a symmetrical arm. The analysis was performed using software developed by the authors. This software enables full automation of the experiment process. The rotor is investigated by the method of reflection photoelasticity. The experimental solution is realized as a case of periodically repeating dynamic effects, in which a stroboscopic source of white light is needed. The results of the experiment are compared with the numerical solution and their dependence is represented by diagram.

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Section: Discussionmentioning

confidence: 99%

Distorsion of Isochromatic Fringes in the Process of Stress Measurement in Structural Part by Photoelasticimetry

Frankovský

Ostertag

Delyová

2018

Strojnícky Časopis - Journal of Mechanical Engineering

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“…Measurements in normal operation are performed by companies dealing with these sensors, however in my case, I will deal with the theory and practice of the sensor, which is to streamline the measurement process by increasing the service life and refining its output measured values, especially in laboratory conditions. In practice, the sensors may behave differently with a small deviation, but we take the laboratory state as required for the initial parameters of the sensor [Frankovsky 2017, Kadiyala 2017.…”

Section: Sensor Diagnosticsmentioning

confidence: 99%

Research and Diagnostics for the Laboratory of Pressure Resistant Sensors

Zelnik¹,

Kamenszka²,

Bozek³

2021

MM SJ

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The use of the sensors shortens the service life, wears out and reduces their accuracy due to operation. For sensors with a susceptibility to inaccuracy, it is possible to create a sensor-device-software diagnostic set. Such a scheme of configuration should be able to provide autonomic diagnostic, calibration, evaluation and also recalibration of the sensor. The diagnostic equipment could also have a shock test function in order to intentionally and faster reduce the service life and thus test the correctly set parameters of the diagnostic algorithm in laboratory conditions. The diagnostic device is a specialized technical system that provides conditions for the future potential of the testing development, knowledge and experience. According to the design, it can be modularly enriched with new parts, fixtures and systems to provide a more diverse range of options. There would be space for exploring the possibilities of new types of sensors, their comparison, as well as full-fledged automation of the complex diagnostic process.

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“…For example in drilling or in accuracy check, but its use is universal in many other areas where gravity acceleration, position, orientation, direction and velocity of movement are to be measured. It can be used, for example, in experimental analysis of rotor stress [16], in cooperation between a human and an industrial robot [17].…”

Section: Possibilities Of Using An Inertial Measurement Unit In Produ...mentioning

confidence: 99%

Design of an Inertial Measuring Unit for Control of Robotic Devices

Škultéty

Pivarčiová

Karrach

2019

MSF

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Industrial robots are increasingly used to automate technological processes, such as machining, welding, paint coating, assembly, etc. Automation rationalizes material flows, integrates production facilities and reduces the need for manufacturing inventory, provides cost savings for human maintenance. Technology development and growing competition have an influence on production growth and increase of product quality, and thus the new possibilities in innovation of industrial robot are searched for. One of the possibilities is applying of an inertial navigation system into robot control. This article focuses on new trends in manufacturing technology: design of Inertial Measurement Unit (IMU) for a robotic application control. The Arduino platform is used for the IMU as a hardware solution. The advantage of this platform is low cost and wide range of sensors and devices that are compatible with this platform. For scanning, the MEMS sensor MPU6050 is used, which includes a 3-axis gyroscope and an accelerometer in one chip. New trends in manufacturing facilities, especially robotics innovation and automation, will enable the productivity to grow in production processes.

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Experimental analysis of stress fields of rotating structural elements by means of reflection photoelasticity

Cited by 10 publications

References 11 publications

Distorsion of Isochromatic Fringes in the Process of Stress Measurement in Structural Part by Photoelasticimetry

Distorsion of Isochromatic Fringes in the Process of Stress Measurement in Structural Part by Photoelasticimetry

Research and Diagnostics for the Laboratory of Pressure Resistant Sensors

Design of an Inertial Measuring Unit for Control of Robotic Devices

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