SOLDERING TECHNOLOGY OF POROUS FIBROUS MATERIAL OF THE «FEHRAL»-TYPE ALLOY FOR SEALING OF THE FLOW PART OF GTE

2014 ◽  
Vol 0 (1) ◽  
pp. 2-2
Author(s):  
A.N. Afanasiev-Khodykin ◽  
◽  
V.S. Rylnikov ◽  
D.P. Farafonov ◽  
◽  
...  
Keyword(s):  
Fibrous Material ◽  
Type Alloy ◽  
Flow Part ◽  
Soldering Technology ◽  
Porous Fibrous Material

MEASUREMENT OF THERMOPHYSICAL PROPERTIES OF FLEXIBLE THERMAL INSULATION

2021 ◽  
pp. 119-126
Author(s):  
A.V. Zuev ◽  
◽  
Yu.P. Zarichnyak ◽  
D.Ya. Barinov ◽  
L.L. Krasnov ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Heat Capacity ◽  
Thermal Insulation ◽  
Thermophysical Properties ◽  
Fibrous Material ◽  
Sewing Thread ◽  
Silica Fibers ◽  
Porous Fibrous Material ◽  
Highly Porous

The paper presents the results of measuring thermal conductivity and heat capacity of a flexible thermal insulation. Flexible thermal insulation is a highly porous fibrous material, a construction that includes felt, covered on all sides with fabric. The whole structure is stitched with a thread. The fibrous core, fabric and sewing thread are composed of silica fibers. Thermal conductivity was measured by the stationary method on flat samples. The heat capacity was determined using a NT-1000 calorimeter. The calculation of heat transfer was carried out for the conditions characteristic of those in effect when the spacecraft entered the orbit.

scholarly journals Different Structures of PVA Nanofibrous Membrane for Sound Absorption Application

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
Jana Mohrova ◽  
Klara Kalinova
Keyword(s):  
Polyvinyl Alcohol ◽  
Fibrous Material ◽  
Sound Absorption ◽  
Water Solubility ◽  
Vibration System ◽  
Sonic Energy ◽  
Sonic Waves ◽  
Membrane Resonance ◽  
Energy Type ◽  
Porous Fibrous Material

The thin nanofibrous layer has different properties in the field of sound absorption in comparison with porous fibrous material which works on a principle of friction of air particles in contact with walls of pores. In case of the thin nanofibrous layer, which represents a sound absorber here, the energy of sonic waves is absorbed by the principle of membrane resonance. The structure of the membrane can play an important role in the process of converting the sonic energy to a different energy type. The vibration system acts differently depending on the presence of smooth fibers in the structure, amount of partly merged fibers, or structure of polymer foil as extreme. Polyvinyl alcohol (PVA) was used as a polymer because of its good water solubility. It is possible to influence the structure of nanofibrous layer during the production process thanks to this property of polyvinyl alcohol.

scholarly journals Evaluation of changes in thermodiffusion properties of mineral wool resulting from treatment with water and re-drying

2018 ◽  
Vol 174 ◽  
pp. 01017
Author(s):  
Zbigniew Perkowski ◽  
Maciej Grygorowicz ◽  
Kamil Jeż
Keyword(s):  
Mathematical Model ◽  
Inverse Problem ◽  
Heat Transport ◽  
Moisture Transport ◽  
Fibrous Material ◽  
Mineral Wool ◽  
Basic Parameters ◽  
Stone Wool ◽  
The Mathematical Model ◽  
Porous Fibrous Material

The work presents the formulation of inverse problem that allows to estimate the basic parameters describing coupled thermodiffusion of moisture in porous fibrous material and construction of the measuring stand in order to obtain the necessary data to carry out calculations for this purpose. This approach was used to evaluate the changes in the thermodiffusion properties of stone wool samples for the indoor applications that were treated with water and re-dried. In the mathematical model, one introduced a simplification that coupling in the thermodiffusion process is unilateral and includes only the influence of heat transport on moisture transport.

Biomechanical Evaluation of Neuro-occlusal Rehabilitation for Occlusal Imbalance Correction in Children with Facial Asymmetry

2018 ◽  
Vol 6 ◽  
Author(s):  
Javier Ortún-Terrazas ◽  
Jose Cegoñino ◽  
Urbano Santana-Penín ◽  
Edson Illipronti-Filho ◽  
Amaya Pérez del Palomar
Keyword(s):  
Medical Devices ◽  
Fibrous Material ◽  
Computational Models ◽  
Eating Habits ◽  
Facial Asymmetry ◽  
Material Models ◽  
Biomechanical Evaluation ◽  
Computational Methodology ◽  
Porous Fibrous Material

Contemporary eating habits may cause malformations in children jaw, that are difficult to evaluate and treat clinically. In this work, a computational methodology for the diagnosis and the treatment of this pathology is proposed. It combines porous-fibrous material models, medical devices and computational models of patients with facial asymmetries from the perspective of neuro-occlusal rehabilitation.

ACI HW

Alloy Digest ◽  
1957 ◽  
Vol 6 (11) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Base Alloy ◽  
Heat Treating ◽  
Cyclic Heating ◽  
Nickel Base Alloy ◽  
Type Alloy ◽  
Temperature Performance ◽  
Nickel Base

Abstract Type HW is a nickel-base alloy containing chromium and iron. It is austenitic, non-magnetic, and has exceptionally high resistance to corrosion, cyclic heating, and oxidation. It is of the 60 Ni-12Cr type alloy. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Ni-37. Producer or source: Stainless steel foundries. Revised as Alloy Digest Ni-449, April 1994.

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