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The continuous miniaturization of products and the growing complexity of their embedded multifunctionalities necessitates continuous research and development efforts regarding micro components and related micro manufacturing technologies. Highly miniaturized systems, manufactured using a wide variety of materials, have found application in key technological fields, such as healthcare devices, micro implants, mobility, communications, optics, and micro electromechanical systems. Innovations required for the high-precision manufacturing of micro components can specifically be achieved through optimizations using post-process (i.e., offline) and in-process (i.e., online) metrology of both process input and output parameters, as well as geometrical features of the produced micro parts. However, it is of critical importance to reduce the metrology and optimization efforts, since process and product quality control can represent a significant portion of the total production time in micro manufacturing. To solve this fundamental challenge, research efforts have been undertaken in order to define, investigate, implement, and validate the so-called “product/process manufacturing fingerprint” concept. The “product manufacturing fingerprint” concept refers to those unique dimensional outcomes (e.g., surface topography, form error, critical dimensions, etc.) on the produced component that, if kept under control and within specifications, ensure that the entire micro component complies to its specifications. The “process manufacturing fingerprint” is a specific process parameter or feature to be monitored and controlled, in order to maintain the manufacture of products within the specified tolerances. By integrating both product and process manufacturing fingerprint concepts, the metrology and optimization efforts are highly reduced. Therefore, the quality of the micro products increases, with an obvious improvement in production yield. Accordingly, this Special Issue seeks to showcase research papers, short communications, and review articles that focus on novel methodological developments and applications in micro- and sub-micro-scale manufacturing, process monitoring and control, as well as micro and sub-micro product quality assurance. Focus will be on micro manufacturing process chains and their micro product/process fingerprint, towards full process optimization and zero-defect micro manufacturing.

n/a --- Fresnel lenses --- Electro sinter forging --- micro-injection moulding --- surface roughness --- charge relaxation time --- optimization --- gratings --- plasma-electrolytic polishing --- micro structures replication --- micro-grinding --- electrical discharge machining --- injection molding --- quality control --- commercial control hardware --- electrical current --- damping --- process monitoring --- fingerprints --- impact analysis --- current monitoring --- process control --- quality assurance --- surface integrity --- microfabrication --- microinjection moulding --- electro chemical machining --- superhydrophobic surface --- surface modification --- haptic actuator --- electrical discharge machining (EDM) --- surface morphology --- inline metrology --- optical quality control --- finishing --- flow length --- precision injection molding --- laser ablation --- micro metrology --- Halbach linear motor --- 2-step analysis --- computer holography --- PeP --- satellite drop --- process fingerprint --- materials characterisation --- current density --- micro drilling --- multi-spectral imaging --- lithography --- manufacturing signature --- artificial compound eye --- electrohydrodynamic jet printing --- ECM --- positioning platform --- diffractive optics --- bioceramics --- resistance sintering --- uncertainty budget --- product fingerprint --- confocal microscopy --- spectral splitting --- dental implant --- desirability function --- injection compression molding --- electrochemical machining (ECM) --- high strain rate effect --- process fingerprints

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The Special Issue ‘Physical Metallurgy of High Manganese Steels’ addresses the highly fascinating class of manganese-alloyed steels with manganese contents well above 3 mass%. The book gathers manuscripts from internationally recognized researchers with stimulating new ideas and original results. It consists of fifteen original research papers. Seven contributions focus on steels with manganese contents above 12 mass%. These contributions cover fundamental aspects of process-microstrcuture-properties relationships with processes ranging from cold and warm rolling over deep rolling to heat treatment. Novel findings regarding the fatigue and fracture behavior, deformation mechanisms, and computer-aided design are presented. Additionally, the Special Issue also reflects the current trend of reduced Mn content (3-12 mass%) in advanced high strength steels (AHSS). Eight contributions were dedicated to these alloys, which are often referred to as 3rd generation AHSS, medium manganese steels or quenching and partitioning (Q&P/Q+P) steels. The interplay between advanced processing, mainly novel annealing variants, and microstructure evolution has been addressed using computational and experimental approaches. A deeper understanding of strain-rate sensitivity, hydrogen embrittlement, phase transformations, and the consequences for the materials’ properties has been developed. Hence, the topics included are manifold, fundamental-science oriented and, at the same time, relevant to industrial application.

n/a --- TRIP --- microstructure --- medium-manganese steel --- dislocation density --- V alloying --- ultrafine grains --- intercritical annealing --- medium manganese steel --- fracture --- precipitations --- twinning induced plasticity --- deformation behavior --- fatigue --- austenite-reversed-transformation --- medium-manganese --- Lüders band --- medium-Mn steel --- fatigue behavior --- alloy design --- austenitic high nitrogen steel (HNS) --- high-entropy alloys --- mechanical properties --- retained austenite --- high-manganese steel --- localized deformation --- phase transformation --- austenite stability --- processing --- strain-hardening behavior --- TWIP steel --- recrystallization annealing --- damage --- strengthening --- cold rolling --- ultrafine-grained microstructure --- serrated flow --- multiscale simulation --- deformation twinning --- annealing --- high-Mn steels --- corrosion resistance --- TWIP --- quenching and partitioning --- high manganese steel --- lightweight --- residual stresses --- in-situ DIC tensile tests --- crash box --- deep rolling --- high strength steel --- plastic deformation --- MMn steel X20CrNiMnVN18-5-10 --- neutron diffraction --- phase field simulation --- dynamic strain aging --- cold deformation --- near surface properties --- P steel --- continuous annealing --- texture --- hydrogen embrittlement --- hot-stamping --- warm rolling --- strain-rate sensitivity --- austenite reversion --- D&amp --- forging --- high-manganese steels --- grain refinement --- double soaking

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This book is the result of a Special Issue published in Applied Sciences, entitled “New Trends in Recycled Aggregate Concrete"". It identifies emerging research areas within the field of recycled aggregate concrete and contributes to the increased use of this eco-efficient material.Its contents are organised in the following sections: Upscaling the use of recycled aggregate concrete in structural design; Large scale applications of recycled aggregate concrete; Long-term behaviour of recycled aggregate concrete; Performance of recycled aggregate concrete in very aggressive environments; Reliability of recycled aggregate concrete structures; Life cycle assessment of recycled aggregate concrete; New applications of recycled aggregate concrete.

crushing --- heavyweight waste glass --- n/a --- recycled aggregate quality --- seismic load --- microstructure --- construction waste --- permeability --- bond strength --- seismic performance --- aggregate interlock mechanism --- recycled concrete aggregates --- compressive strength --- crumb rubber --- cellular concrete --- model --- cyclic load --- recycled aggregate --- crushed glass --- models --- recycled aggregate concrete --- reactive power concrete --- recycled aggregate concrete (RAC) --- energy absorbing --- creep --- elevated temperature --- fiber-reinforced concrete --- size effect --- recycled concrete aggregate --- geological nature of aggregates --- mechanical properties --- recycled concrete --- artificial neural networks --- recycled aggregates --- steel fibre --- quality of aggregates --- aggregates --- foam stability --- ceramic foam --- durable characteristics --- nylon fiber --- concrete --- mechanical characteristics --- strain rate --- steel reinforced recycled aggregate concrete (SRRAC) --- dynamic mechanical property --- concrete sludge fines --- water absorption --- columns --- environmental impact --- blast-furnace slag --- input variable --- tensile splitting strength --- aggregate --- returned concrete --- reinforced concrete member --- variable sensitivity --- soil stabilization --- numerical analysis --- shear behavior --- fly-ash --- modulus --- life cycle assessment --- foam structure --- silica fume --- recycling --- recycled coarse aggregate concrete --- ready-mixed concrete --- foam concrete --- flexural behavior --- mixture proportioning --- aggregate characteristic --- residual properties --- CT --- reinforced concrete --- shrinkage