Operation 3D Printers Renishaw AM400 for 3D Printing by Method SLM

BYRTUS, R. Obsluha 3D tiskárny Renishaw AM400 pro 3D tisk metodou SLM: Bakalářská práce. Ostrava: VŠB – Technická univerzita Ostrava, Fakulta strojní, Katedra obrábění, montáže a strojírenské metrologie, 2017 47s. Vedoucí práce: Ing. Marek Pagáč, Ph.D. Hlavní náplň bakalářské práce spočívala v provedení rešerše všech dostupných metod aditivní výroby a vytvoření uceleného postupu procesu stavby metodou SLM na zařízení Renishaw AM400 za použití korozivzdorného práškového kovu AISI 316L. Teoretická část se zabývala teorii 3D tisku, představením jednotlivých metod tisku a systémů. Dále byla představena samotná metoda selektivního laserového tavení kovů, specifikace práškových kovů a 3D tiskárna na kov. Praktická část je věnována obsluze stroje, jeho kalibrací a činnostem potřebným k zahájení a dokončení tisku.BYRTUS, R. Operation 3D Printers Renishaw AM400 for 3D Printing by Method SLM: Bachelor thesis, Ostrava: VŠB – Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Machining, Assembly and Engineering Metrology, 2017 47s. Thesis head: Ing. Marek Pagáč, Ph.D. The main aim of the bachelor thesis was to investigate all available methods of additional production and to create a complex process of the SLM method of the Renishaw AM400 using a stainless steel AISI 316L powder. The theoretical part deals with the theory of 3D printing, introducing the individual printing methods and systems. In addition, the method of selective laser metal melting, the specification of powder metals and the 3D metal printer were introduced. The practical part is devoted to machine operation, calibration and activities required to initiate and complete printing.346 - Katedra obrábění, montáže a strojírenské metrologievýborn

Impact of interlayer cation composition and strongly bound water on smectite ẟ²H, as determined by a modified TCEA method

Interlayer cation composition and cation hydration enthalpy can potentially affect the excess hydrogen-yield and δ2H of smectitic clays. Complexities arise from condensed atmospheric water adsorbed on the clay, as it constitutes a potential additional source of hydrogen when attempting to measure the δ2H of structural OH groups. To approach this problem, the δ2H of different cation-saturated, dried forms of six Clay Minerals Society Source Clay smectites were measured. A modified sample drying and on-line High-Temperature-Conversion-Elemental-Analysis (TCEA) Continuous-Flow-Isotope-Ratio-Mass-Spectrometry protocol, facilitated isotopic measurements. A stronger interlayer cation hydration enthalpy (Ca2+\u3eNa+\u3eK+), caused higher residual (post-degassing) adsorbed water contents, which produced poorer smectite δ2H reproducibility. Drying K-saturated smectites, 4 hours at 220˚C, produced the lowest adsorbed water contribution and the most reproducible and possibly ‘accurate’ δ2H for smectite hydroxyl hydrogen. Notwithstanding limited rehydration potential, the TCEA method provided the lowest measurement error for hydroxyl δ2H and facilitated greater sample throughput than classical methods

Transverse comparison of δ¹⁵N (‰ Air) values by juveniles age calculated from reconstructed maximum density estimators (MDEs) [19].

<p>Mean and SD range for adult females and all juveniles are indicated with open circles and crosses, respectively.</p

δ¹⁵N and δ¹³C_col isotopic values among age ranges.

<p>Different letters show statistically significant differences. A: Adult, G 1: Group 1, G 2: Group 2, G 3: Group 3, G 4: Group 4.</p

δ¹³C_col (‰VPDB), δ¹⁵N, (‰ Air), %C, %N, C/N and %Col yield values for Canímar Abajo juveniles and adult females.

<p>δ¹³C_col (‰VPDB), δ¹⁵N, (‰ Air), %C, %N, C/N and %Col yield values for Canímar Abajo juveniles and adult females.</p

Location of Canímar Abajo, Cuba (23°2'16.29"N and 81°29'48.25"W).

<p>See image use policy in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0176065#pone.0176065.s002" target="_blank">S1 File</a>.</p

SIAR model percent mode estimates and accompanying high (HCI) and low (LCI) 95% credibility intervals (CI) for potential diet protein sources for the Canímar Abajo 0–1, 1–2 and 2–5 year old juveniles.

<p>SIAR model percent mode estimates and accompanying high (HCI) and low (LCI) 95% credibility intervals (CI) for potential diet protein sources for the Canímar Abajo 0–1, 1–2 and 2–5 year old juveniles.</p

Results of the Tukey Kramer multiple comparisons of isotope means among juvenile age groups and female individuals.

<p>Group 1 (0 to 0.5), Group 2 (0.5 to 1), Group 3 (1 to 2) and Group 4 (2 to 6). Diff.: difference. ANOVA: N: F = 2.45, df = 4; C: F = 14.5, df = 4; p≤0.05.</p

δ¹³C and δ¹⁵N isotopic offsets between maternal bone collagen and maternal milk; and maternal milk–infant bone collagen.

<p>δ¹³C and δ¹⁵N isotopic offsets between maternal bone collagen and maternal milk; and maternal milk–infant bone collagen.</p