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Validation of the X-Ray Stress Measurement Method

References 1. Kula E., Weiss V.: Residual Stress and Stress Relaksation. Plenum Press New York,1982. 2. Kokosza A.: Application of the method magnetic Barkhausen noise measurement to evaluate the stress in steels, [in Polish]. Seminar on Methodological problems of residual stress measurement, Poznań 1994. 3. Noyan I.C., Cohen J.B.: Residual stress measurement by diffraction and interpretation, Springer- Verlag New York, 1987. 4. Pszonka A., Ziaja J.: X-ray stress measurement methods [in Polish

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The Experimental Verification of the Numerical Model for Cracked Beam Incorporating Measurement Uncertainty

References ABAQUS Analysis User's Manual, Volume II, III, IV, V. Version 6.5. ABAQUS, Inc. 2004. Gounaris G. D., Papadopoulos C. A.: Crack Identification in Rotating Shafts by Coupled Response Measurements. Engineering Fracture Mechanics 69 (2002) 339-352. Żywica G.: Symulacyjne badanie wpływu pęknięcia konstrukcji podpierającej na stan dynamiczny łożyskowanego ślizgowo wirnika. Tribologia 1 (2007) 299-309. Żywica G.: Wpływ pęknięcia na własności

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The Influence of Pulsating Tensile Stress on Residual Magnetic Field of P91 Steel Samples

REFERENCES 1. Roskosz M., Metal magnetic memory testing of welded joints of ferritic and austenitic steels, NDT&E International, 44 (2011) 305–310, doi:10.1016/j.ndteint.2011.01.008 2. Roskosz M., Bieniek M., Evaluation of residual stress in ferromagnetic steels based on residual magnetic field measurements NDT&E International, 45 (2012) 55–62, doi:10.1016/j.ndteint.2011.09.007 3. Kwaśniewski J, Roskosz M., Witoś M., Molski Sz., Applications of magnetometric sensors based on amorphous materials in diagnostics of wire ropes. Archives of Mining

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Application of 3D DIC Displacement Field Measurement in Residual Stress Calculations

REFERENCES 1. Wither P.J., Residual stress and its role in failure. Reports on Progress in Physics, 70 (2007) 2211–2264. 2. Rossini N.S., Dassisti M., Benyounis K.Y., Olabi A.G., Methods of measuring residual stresses in components. Materials & Design, 35 (2012) 572–588 3. Mathar J., Determination of Initial Stresses by Measuring the Deformation Around Drilled Holes. Trans., ASME 56 (1934) 249-254. 4. Huang X.; Liu Z. & Xie H., Recent progress in residual stress measurement techniques. Acta Mechanica Solida Sinica, 26 (2013) 570 – 583

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The Selected Measurement Problems in the Aspect of the Non-Destructive Testing of the Gear Wheels and the other Parts

, 2011, 41. 4. Kondej A., Baranowski M., Niedźwiedzki K., Jończyk. S., Szczepański A.: Automatic stand for NDT inspection using eddy current method. [in Polish]. Inżynieria Powierzchni 1 (2014), 57-62. 5. Babul T., Jończyk S., Samborski T., Włodarczyk S.: Detection of local inhomogeneity of the material and microstructure changes using eddy current method. [in Polish]. Przegląd Spawalnictwa 12 (2013), 25-28. 6. Babul T., Jończyk S., Samborski T.: Assessment of local defects in the microstructure - correlation measurements

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Kinetic Measurements of Hydrogen Distribution between Different States in Exploited Steels

Kinetic Measurements of Hydrogen Distribution between Different States in Exploited Steels

The Hydrogen Analyzer AV-1 equipped with the high resolution registration system has been used to measure the kinetics of hydrogen extraction and thus to distinguish the different states of hydrogen in metals. The hydrogen distribution between the various energetic states as measured in the pipe line ferrite-pearlite steels being in service for different time has been shown to depend on conditions and on time of exploitation. Results of such measurements may be used for assessing the life time of industrial installations.

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Measurement of Force Components and Ra Surface Roughness Parameter During Grinding Titanium Alloy

Abstract

The paper deals with the measurements of selected parameters during grinding process of aerospace industry alloy. Grinding is one of the most important methods of shaping machine elements. As a result of grinding with high dimensional and shape accuracy as well as with the expected parameters describing the state of the surface layer (SL) should be obtained. Grinding difficult to machine materials used in the aerospace industry is an issue currently being examined by various research centres. An excellent example is the analysis of the grinding process of titanium alloys, as these materials have very poor machinability due to the tendency to adherence to abrasive materials, low thermal conductivity, high strength and compliance at elevated temperatures, which may adversely impact on the quality of SL. A number of factors influence on shaping SL. Worth mentioning are mechanical and thermal phenomena, as well as the type of cutting fluid and abrasive materials

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Temperature measurement using a Chx/porous silicon/Si structure encapsulated in a CO2 rich environment

Temperature measurement using a Chx/porous silicon/Si structure encapsulated in a CO2 rich environment

This work reports on the possible use of microporous silicon as a temperature sensor. This work is based on previous published works [7, 8, and 9]. The device is based on hydrocarbon group (CHx) / porous silicon (PS) /Si structure. The porous sample was coated with hydrocarbons groups deposited by the plasma of methane /argon mixture. Current-voltage characteristics have been investigated as a function of temperature in the range 20°C-70°C. The results show that for a constant voltage in the range 0.7-1V, the current increases linearly with the environment temperature reaches a maximum at 70°C and then stabilizes. This result suggests that the developed structure can be used for sensing temperatures not exceeding 70°C.

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Effect of Black Liquor from Date Palm on the Workability and Compressive Strength of Portland Cement and Concrete

. Ferraris C.F. Measurement of the rheological properties of high performance concrete: state of the art report. Journal of Research of the National Institute of Standards and Technology, 104(5) (1999) 461–478. 5. Cyr M., Legrand C., Mouret M. Study of the shear thickening effect of superplasticizers on the rheological behaviour of cement pastes containing or not mineral additives. Cement and Concrete Research, 30 (2000) 1477–1483. 6. Jayasree C., Gettu R. Experimental study of the flow behaviour of superplasticized cement paste. Materials and Structures, 41

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XPS measurements of passive film formed on AISI 316L SS after electropolishing in a magnetic field (MEP)

Abstract

Electrochemical polishing of metals and alloys is one of the most currently used finishing treatments, covering metallic biomaterials with complicated shapes (coronary stents, prostheses, etc.). A standard electropolishing (EP) process has been recently modified by including a magnetic field, and called the magnetoelectropolishing (MEP). Many surface properties and even mechanical features may be modified and improved by MEP. The changes are concerned with the surface film composition which undergo a modification. For the present studies, X-ray Photoelectron Spectroscopy (XPS) analysis was applied to measure the surface film composition on AISI 316L stainless steel. In conclusion both Cr-X/Fe-X compounds ratio as well as Cr/Fe total ratio of the 316L steel after EP and MEP were calculated and compared to reveal the advantage of the magnetic field used.

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