Results 71 to 80 of about 470,913 (318)
Astronomy & Geophysics, 2015 Arches, streamers, polar lights, merry dancers… just a few of many names used to describe the aurora borealis in historical documents in the UK. We have compiled a new catalogue of 20591 independent reports of auroral sightings from the British Isles and Ireland for 1700–1975 using observatory yearbooks, the diaries of amateur observers, newspaper ...
Luke Barnard, Mike Lockwood
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Advanced Engineering Materials, EarlyView.The utilization of direct energy deposition (DED)‐arc additive manufacturing processes in industrial applications is increasing, and these processes have the potential for multi‐material applications. This work provides a overview of the state of research in DED‐arc made functional graded structures, to establish a link to potential industrial ...
Kai Treutler, Volker Wesling
wiley +1 more source
Advanced Engineering Materials, EarlyView.This work reveals the phase composition and quantitative morphology analysis of precipitation‐hardened Fe32Cu12Ni11Ti16Al29 complex‐concentrated alloy. The precipitates are shown to have a high coherency. Morphology transition between sphere, cuboidal, and elongated morphology is observed. Finally, the overaging behavior is captured using microhardness.
Rostyslav Nizinkovskyi +4 more
wiley +1 more source
An Innovative Construction Technique for Curved Structures
Applied Sciences, 2020 In the present paper, an innovative, recently patented technique for the construction of a curved structural member without scaffolds is proposed and illustrated.
Alessio Cascardi +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Copper addition profoundly impacts MoNbTi multiprincipal element alloys. This study reveals copper's dual role, promoting microstructural refinement and strengthening intermetallics at optimal concentrations. An ideal copper content significantly boosts hardness and compressive strength, achieving superior mechanical performance.
Eder Lopes Ortiz +6 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study focuses on processing the titanium alloy Ti‐17 using wire arc directed energy deposition (waDED), with an emphasis on the microstructure and mechanical properties. The waDED typical heat‐affected zone banding is characterized and related to the local mechanical properties.
Alexander Wenda +7 more
wiley +1 more source
ANALIZA SVODA STOPALA UČENIKA SREDNJE ŠKOLE PROSEČNE STAROSTI OD 15 DO 18 GODINA TEHNIČKE ŠKOLE U TUTINU [PDF]
Sport Mont, 2011 This paper presents the results of the foot in the population of high school students, averag age of 15 to 18 years of the Technical School in Tutin.The sampleis introduced by population of 420 students of both sexes, 171 boys and 249girls.The aim of the
Admira Koničanin +2 more
doaj
, 2018 Honorific arch built in Rome to celebrate the new emperor Constantine, after his victory over Maxentius at the Battle of the Milvian Bridge (312 CE).
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Advanced Engineering Materials, EarlyView.Equal channel angular pressing of commercial pure copper under low strain amplitude (≈0.48) induces concurrent continuous and localized discontinuous dynamic recrystallization, forming a duplex structure influenced by strain heterogeneity and recovery. Moderate hardening after 4–12 passes results from progressive high‐angle grain boundary formation via
Paula Cibely Alves Flausino +6 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Additive manufacturing (AM) transforms space hardware by enabling lightweight, high‐performance, and on‐demand production. This review outlines AM processes—powder bed fusion (PBF), directed energy deposition (DED), binder jetting (BJ), sheet lamination (SL), and material extrusion (ME)—applied to propulsion, satellite structures, and thermal devices ...
Stelios K. Georgantzinos +8 more
wiley +1 more source