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References [1] Bolton W. Mechatronics - electronic control systems in mechanical and electrical engineering. Harlow: Pearson Education Ltd., 2008 [2] Bergmann G., Graichen F., Rohlmann A., Verdonschot N., van Lenthe G. H. Frictional heating of total hip implants, Part 1: measurements in patients; Journal of Biomechanics 2001; 34: 421-428. [3] Dong Z. L., Khor K. A., Quek C. H., White T. J., Cheang P. Biomaterials 2003; 24: 97-105. [4] Gheorghe Gh.I., Badita L.L. Advanced micro and nanotechnologies in mechatronics. Bucharest: Ed. CEFIN, 2009. [5] Buschan B

Abstract

Diamond-like carbon (DLC) films were electrochemically deposited onto indium tin oxide (ITO) substrates using acetic acid and deionized water as electrolyte at low deposition voltages (2.4 V and 60 V). The transmittance of the films was investigated by UV spectrometry. Transmittance measurements versus wavelength revealed that the films transmit 86 % to 89 % light in visible region and band gap of the films varies between 3.87 eV and 3.89 eV. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used for structural characterization to evaluate surface morphology of the DLC films. The grain size and the surface roughness increased for the films prepared at higher deposition potential, while their measured average height decreased. The mechanical properties (hardness H and elastic modulus Er) were determined from load-displacement curves which were obtained by using nanoindentation method. Hardness and elastic modulus of the films increased as the deposition voltage of the films increased from 2.4 V to 60 V.

, 26(12), 1187-1192. [16] Pekbey Y, Sayman O. (2006). A Numerical and Experimental Investigation of Critical Buckling Load of Rectangular Laminated Composite Plates with Strip Delamination. Journal of Reinforced Plastics and Composites, 25(7), 685-697. [17] Ashir M, Nocke A, Cherif C. (2018). Influence of defined amount of voids on the mechanical properties of carbon fiber-reinforced plastics. Polymer Composites. published online 7 March 2018. doi: 10.1002/pc.24820. [18] Tartare M, Rebuffel V, Ducros N, Verger L. (2014). Dual and Multi-energy Radiography for CFRP

-entropy compensation in sorption phenomena of starch materials. Food Res. Int. 38(5), 505-510. http://dx.doi.org/10.1016/j.foodres.2004.11.004 41. Pourcel, F., Jomaa , W., Puiggali, J.R. &Rouleau, L. (2007). Crack Appearance during Drying of an Alumina Gel: Thermo-Hydro-Mechanical Properties. Drying Technol. 25(4-6), 759-766. DOI: 10.1080/07373930701370134. 42. Takhar, Pawan, S. ( 2011). Hybrid Mixture Theory Based Moisture Transport and Stress Development in Corn Kernels During Drying: Coupled Fluid Transport and Stress Equations. J. Food Eng. 105(4), 663-670. http://dx.doi.org/10

References [1] J. Aboudi, “Micromechanical characterization of the non-linear viscoelastic behavior of resin matrix composites,” Composites Science and Technology, vol. 38, pp. 371-386, 1990. [2] A. F. Avila, M. L. Soares and A. S. Neto, “A study on nanostructured laminated plates behavior under low velocity impact loading,” International Journal of impact Engineering, vol. 34, pp. 28-41, 2007. http://dx.doi.org/10.1016/j.ijimpeng.2006.06.009 [3] J. M. Whitney, Fatigue characterization of composite materials. Fatigue of fibrous composite materials, ASTM STP 723

References 1. B. B. Sheth, F. J. Bandelin, and R. F. Shangraw, Tablets, in Pharmaceutical Dosage Forms (Eds. H. A. Lieberman and L. Lachman), 1st ed., Marcel Dekker, New York 1980, pp. 109-185. 2. P. Davies, Oral Solid Dosage Forms, in Pharmaceutical Preformulation and Formulation (Ed. M. Gibson), 2nd ed., Informa Healthcare, Inc., New York 2009, pp. 367-430. 3. R. J. Roberts, Particulate Analysis: Mechanical properties, in Solid State Characterization of Pharmaceuticals (Eds. R. A. Storey and I. Ymen), 1st ed., John Wiley & Sons, Southern Gate UK 2011, pp. 357

Abstract

Single crystals of ammonium oxalate monohydrate (AO) were grown using the slow evaporation solution growth technique. The cell parameters obtained from the single crystal diffraction experiments matched with those known earlier showed that the grown crystals were composed of AO. The variation of dielectric constant as a function of frequency shows that the dielectric constant is relatively high in low frequency region and low in the high frequency region. Microhardness study indicates that the grown AO crystal is of a soft nature. The TG and DTA studies reveal that the grown crystal has good thermal stability and can be exploited in various applications up to 100 °C. There is a change in morphology of etch pits on prolonged etching. A very low value of dielectric constant supports that the material can be exploited in photonic and electro-optic devices. Thermal stability of the grown crystal is good.

Abstract

In this paper, three BaTiO3 powders of various particle size distributions were obtained as a result of mechanical activation in the mixer mill. Green barium titanate pellets and cylindrical specimens were fabricated by both uniaxial and isostatic pressing methods. As a result of the application of different maximal sintering temperatures, the obtained materials were characterized by various average grain sizes: 0.8 μm, 20 μm and 31.0 μm. The basic properties of sintered pellets and cylinders were determined and the influence of materials average grain size on their Young’s modulus and compressive strength were determined through compression tests in a uniaxial testing machine, Zwick/Roell Z100. The elastic properties were similar for tested materials with a different grain size. However, the microstructure of BaTiO3 strongly influenced the compressive strength.

References [1] Lüftl S., Visakh P.M., Chandran S., Pol yoxymethylene Handbook: Structure, Properties, Applications and their Nanocomposites , Scrivener Publishing LLC, New Jersey 2014. [2] Liu C., Long C., Chen L. et al., Mechanical and tribological properties of short basalt fiber-reinforced polyoxymethylene composites , Polymer (Korea) 40/2016, 836–845. [3] Wang Y., Wang X., Wu D., Mechanical and tribological enhancement of polyoxymethylene-based composites with long basalt fiber through melt pultrusion , Composite Interfaces 23/2016, 743–761. [4] Luo W

-Rohlfing, B., Paar, O., Erli, H.J., 2006. Structural, mechanical and in vitro characterization of individually structured Ti-6Al-4V produced by direct laser forming, Biomaterials, 27(7), 955-63. DOI: 10.1016/j.biomaterials.2005.07.041. Kahlen, F.J., Kar, A., 2001. Tensile Strengths for Laser-Fabricated Parts and Similarity Parameters for Rapid Manufacturing, Journal of Manufacturing Science and Engineering, 123(1), 38-44, DOI: 10.1115/1.1286472. Konečná, R., Kunz, L., Bača, A., Nicoletto, G. 2016. Long fatigue crack growth in Ti6Al4V produced by direct metal laser