Glass is largely used in engineering applications as a structural material, especially for laminated glass (LG) sections. However, the well-known temperature-dependent behaviour of visco-elastic interlayers for LG sections should be properly accounted for safety purposes, even in ambient conditions. The materials thermo-mechanical degradation with increase of temperature could further severely affect the load-bearing performance of such assemblies. Thermo-mechanical Finite Element (FE) numerical modelling, in this regard, can represent a robust tool and support for designers. Key input parameters and possible limits in FE models, however, should be properly taken into account and calibrated, especially for geometrically simplified models, to enable realistic and reliable estimations of real structural behavior. In this paper, FE simulations are proposed for monolithic (MG) and LG specimens under radiant heating, based on one-dimensional (1D) models. With the use of experimental results from the literature, parametric studies are discussed, indicating limits and issues at several modelling assuptions. Careful consideration is paid for various thermal material properties (conductivity, specific heat), boundary conditions (conductivity, emissivity) as well as geometrical features (thickness tolerances, etc.) and composition of LG sections (interlayer type, thickness). Comparative parametric results are hence discussed in the paper.

The Electrochemical Atomic Layer Deposition (E-ALD) technique is used for the deposition of ultrathin film of bismuth (Bi) compounds. Exploiting the E-ALD it was possible to obtain high controlled nanostructured depositions as needed for the application of these materials for novel electronics (topological insulators) and opto-electronics applications. Electrochemical studies have been conducted to determine the Underpotential Deposition (UPD) of Bi on selenium (Se) to obtain the Bi₂Se₃ compound on the Ag (111) electrode. Verifying the composition with the X-ray Photoelectron Spectroscopy (XPS) emerged that, after the first monolayer, the deposition of Se is stopped. Thicker deposits were synthesized exploiting a time-controlled deposition of massive Se. Then we move to discover the optimal conditions to deposit a single monolayer of metallic Bi directly on Ag.

Polymer injection moulding is one of the most used manufacturing processes in the industry. Material and electricity consumption are two of the main points when analyzing the cost and also the environmental impact of this manufacturing processes. Reducing both cost and environmental impact of materials and manufacturing process is one of the key challenges that material science and engineering face today to be more sustainable. In the case of the polymer injection moulding manufacturing process, reducing its electricity consumption is key to achieve a more sustainable manufacturing process. However, a lack of data regarding real electrical consumption values, and how to estimate them has been found. In this paper, a model to estimate the electric consumption of the injectin molding manufacturing process is proposed. This consumption estimation is obtained by means of a parametric model which was created after monitoring the electricity consumption of a wide range of injected parts. By applying this empirical model a better assessment of the electricity consumption, and also the environmental impact of the process can be achieved. This model can be of great interest for manufacturing process engineers, Life Cycle Assessment practitioners and also the industry, as it provides a method to estimate the electricity consumption and cost of an injected part depending on its characteristics and the selected injection machine.

The objectives of this study were to evaluate the retention force of cemented crowns on implant abutments with different luting materials. Cobalt-chromium crowns (n=128) were randomly divided into eight groups (n=16), and a standardized mixture was cemented onto tapered titanium abutments (Camlog) with the following types of luting materials: one eugenol-free temporary cement (RelyX TempBond NE, 3M Oral Care), one composite-based temporary cement (Bifix Temp, Voco) one zinc phosphate cement (Harvard Cement; Hoffmann), two glass-ionomer cements (Meron, Voco; Fuji I, GC), and three resin-modified glass-ionomer cements (Fuji 2, GC; Fuji Plus, GC; Ketac Cem Plus, 3M Oral Care). All specimens were aged for 14 days at 37°C in artificial saliva (S1). One half of the specimens from each group (n=8) were additionally thermocycled (5.000X, 5-55°C) (S2). Then, the crowns were vertically removed using a universal testing machine at a speed of 1 mm/min, and the force was recorded (measurement time T1). Afterwards, the crowns were recemented, aged, and removed and the force was recorded (T2, T3). A linear multiple regression analysis evaluated the influence of the luting materials and aging conditions (S1, S2) on the retention force and measurement times (T 1-3). The multiple linear regression analysis exhibited a statistically significant impact of luting materials and storage condition on the retention force. The retention forces differ statistically significant in the storage condition at T1 (p = 0.002) and T3 (p = 0.0002). The aging conditions (S1, S2) had a small significant influence (p < 0.05) at T3 that was not local. After aging, S1 Ketac Cem Plus had the highest retention force difference (T3 vs. T1) (-773 N) with respect to the median value, whereas RelyX TempBond NE had the smallest difference (-126 N). After aging, S2 Meron had the highest retention force difference (-783 N), whereas the RelyX TempBond NE had the smallest difference (-168 N). Recementation of implant-supported cobalt-chromium crowns decreases the retention force independent of the luting material. A material-specific ranking of the retention force of cemented implant-supported cobalt-chromium crowns was observed at T1.