Article
Construction & Building Technology
Rupert Fisch, Enrico Stecker, Michael A. Kraus
Summary: This paper develops an AI-based assistant for the pre-design and design of steel frame halls, increasing efficiency in the design and construction processes. Through data analysis, suitable AI surrogate models are trained to predict hall parameters, and an interface with the finite element program SOFiSTiK is implemented for calculation and design. The successful implementation of the prototypical co-pilot for steel frame halls and its stability are demonstrated, with future developments and applications discussed.
Article
Obstetrics & Gynecology
Ezgi Turgut, Gokce Turan, Halis Ozdemir, Fatma Aktulum, Merih Bayram, Deniz Karcaaltincaba
Summary: This retrospective study analyzed the changes in fetal cardiac morphology and geometry in gestational diabetes mellitus (GDM) pregnancies at 20-22 weeks of gestation. The findings indicate significant differences in cardiac structural measurements between the GDM A1 and GDM A2 groups compared to the control group, suggesting that GDM can cause early changes in fetal cardiac structure.
JOURNAL OF MATERNAL-FETAL & NEONATAL MEDICINE
(2022)
Article
Psychology, Developmental
Jorg M. Fegert, Vera Clemens, Ulrike Hoffmann
Summary: This article discusses the current situation of sexual abuse and misconduct by health professionals towards children and adolescents, highlighting various forms and causes of violence. Research indicates that sexual abuse stems not only from personal issues but also from structural or societal factors. Targeted preventive measures and institutional guidelines are necessary to prevent and intervene in such misconduct.
KINDHEIT UND ENTWICKLUNG
(2021)
Article
Materials Science, Multidisciplinary
R. Li, Q. Yao, X. Wang
Summary: This study aimed to provide scientific guidance for the application of spiral cutters in particleboard machining. The influence of milling parameters on milling power and power efficiency during helical milling of particleboard was investigated. The response surface methodology was used to optimize the milling parameters and reduce energy consumption while improving energy efficiency. Results showed that milling depth had the greatest impact on milling power and power efficiency, followed by spindle speed and helical angle. The optimized values for helical angle, spindle speed, and milling depth were determined as 54 degrees, 5650 min(-1), and 1.3 mm, respectively.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2023)
Article
Materials Science, Multidisciplinary
M. Yang, J. Chen, C. Wu, G. Xie, X. Jiang, M. Li, H. He
Summary: This paper investigates the evolution of residual stress and surface morphology of quenched 20Cr2Ni4A steel after surface grinding with an alumina grinding wheel. The initial compressive residual stress in the surface layer changes to tensile stress after grinding. Thermal stress is the dominant factor, and both grinding speed and grinding depth have significant effects on the residual stress level.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2022)
Article
Materials Science, Multidisciplinary
M. Ayaz, M. Khandaei, Y. Vahidshad
Summary: The effect of thickness of aluminum, stainless steel and driver sheets on the ultimate tensile strength, weld width and hardness of aluminum-stainless steel joint in electromagnetic welding was investigated. Finite element analysis was used to predict joint formation, experiments were conducted, and microstructure analysis was performed to evaluate weld quality.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2022)
Article
Automation & Control Systems
Jack A. Wilkie, Georg Rauter, Knut Moeller
Summary: This study investigated the impact of speed on the insertion torque of bone screws and found that there was a statistically significant upward trend in torque with increasing insertion speed for different materials. These findings are important for correcting bone strength values in previous models.
AT-AUTOMATISIERUNGSTECHNIK
(2022)
Article
Materials Science, Multidisciplinary
R. N. Bhowmik, J. Pal
Summary: This study aims to improve the durability of brick-aggregate concrete by adding rice husk ash, called brick-ash concrete. The addition of 5% to 10% rice husk ash significantly enhances the permeability and resistance to decay of brick-aggregate concrete.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2023)
Article
Materials Science, Multidisciplinary
M. Shah, M. T. M. Ayob, N. Yaakob, Z. Embong, N. K. Othman
Summary: This research investigates the localized behavior of stainless-steel type 316 L in highly hydrogen sulfide and chloride environments. It finds that the presence of sulfides and chloride ions in the test solution can decrease the corrosion resistance of the stainless steel due to pitting corrosion and breakdown of the passive layer.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2022)
Article
Materials Science, Multidisciplinary
M. Hofele, J. Schanz, A. Roth, D. K. Harrison, A. K. M. De Silva, H. Riegel
Summary: Laser polishing is an effective method to improve the surface quality of laser powder bed fusion metal parts, with different parameters leading to varying degrees of surface roughness reduction. The dependence on the initial surface roughness is reduced, enhancing polishing efficiency and achieving significant improvements in surface roughness.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2021)
Article
Materials Science, Multidisciplinary
J. Liu, S. Li, N. Zhang, Q. Liu, Q. Ma, Z. Han
Summary: The evolution of microstructure, phase composition, three-dimensional morphology, and hardness of Mg-7.80Gd-2.43Y-0.38Zr alloys during solution treatment at 480 degrees C is investigated. The nanoindentation hardness of the secondary phase is significantly higher than that of the alpha-Mg matrix phase, while a cuboid-shaped phase (Gd,Y)H-2 is identified in the solution-treated alloy.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2021)
Article
Materials Science, Multidisciplinary
B. Yang, B. X. Liu, B. Y. Zhang, M. C. Dong, C. X. Chen, P. G. Ji, Z. Y. Li, F. X. Yin
Summary: This study investigated the effect of initial heat-treated conditions on the change of mechanical properties and microstructure evolution by caliber rolling of medium carbon alloy steel (ASTM 5140). The results showed that caliber rolling at a temperature of 550 degrees C provides better strength-ductility balance and impact properties.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2022)
Article
Materials Science, Multidisciplinary
T. Reiber, J. Ruedesheim, M. Weigold, E. Abele, J. Musekamp, M. Oechsner
Summary: The scandium modified aluminium alloy Scalmalloy (R) is developed for laser-based powder bed fusion, with high specific strength but hindered by high surface roughness. Experimental design methods and porosity control strategies can help reduce the roughness and porosity in the contour area, improving mechanical properties.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2021)
Article
Materials Science, Multidisciplinary
S. Sarapure
Summary: This study presents the statistical analysis of various electric discharge machining parameters on Al6082 ultra-fine grained aluminium alloy using the Taguchi method. The RCS method was employed to obtain the ultra-fine grained aluminium alloy. The impact of pulse off time, pulse on time, and current on material removal rate and surface roughness were examined through signal-to-noise ratio (S/N ratio) and analysis-of-variance (ANOVA). The results indicate that parameters significantly influenced the material removal rate and surface roughness, with the material removal rate increasing with discharge current and decreasing with pulse on time and pulse off time, while surface roughness increased with peak current and decreased with pulse on time and pulse off time.
MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK
(2023)
