ANALYSIS OF RAIN EROSION OF COATED MATERIALS PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download ANALYSIS OF RAIN EROSION OF COATED MATERIALS PDF full book. Access full book title ANALYSIS OF RAIN EROSION OF COATED MATERIALS by George S. Springer, Cheng-I. Yang, Poul S. Larsen. Download full books in PDF and EPUB format.
Author: George S. Springer, Cheng-I. Yang, Poul S. Larsen
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
Get Book Here
Book Description
Author: George S. Springer, Cheng-I. Yang, Poul S. Larsen
Publisher:
ISBN:
Category :
Languages : en
Pages : 72
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 13
Get Book Here
Book Description
Author: Charles J. Hurley
Publisher:
ISBN:
Category :
Languages : en
Pages : 55
Get Book Here
Book Description
This report documents a test program which was conducted to evaluate the rain erosion resistance of selected coated monolithic polycarbonate materials after being subjected to accelerated ultraviolet exposure and to evaluate the effect of exposure duration at 500 mph in a 1 inch/hour rainfall. Tests included: weight loss, haze measurements, percent coating removal and SEM examinations. (Author).
Author: Andrew F. Conn
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
Get Book Here
Book Description
The latest phase of an experimental and analytical investigation to develop design characteristics for improved rain erosion resistant coatings is described. Dynamic fracture measurements with a split Hopkinson pressure bar facility have been correlated with AFML rocket sled tests. High speed photography has been used to observe the dynamic deformations of coating materials. The role of fatigue in rain erosion is defined, by an analysis of a wide variety of simulated rain experiments on polymethylmethacrylate. Stress wave interaction studies of coating-substrate systems have been initiated as background for development of multilayered erosion protection coatings. (Author-PL).
Author: G. W. Kelly
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
Get Book Here
Book Description
This program was sponsored in order that the performance of selected rain erosion coatings might be evaluated and that those parameters affecting the performance of these materials might be studied with the goal in mind to upgrade rain erosion coatings for use on high performance aircraft. In order to realize this goal, the following characteristics of two select polyurethane materials were evaluated: coating adhesion to the reinforced composite substrates; solvent evaporation rates or 'solvent release' from each select rain erosion coating material for the purpose of reducing coating porosity of the cured material; a polymerization study related to the chemical reactivity of these moisture reactive materials after exposure to known quantities of free water; a coating familiarization study for each of the rain erosion coating materials; radar signal attenuation studies to determine signal losses through the rain erosion coating; and high-speed erosion tests for selected coating materials and primer combinations. (Author).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1200
Get Book Here
Book Description
Author: Andrew F. Conn
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Get Book Here
Book Description
The first phase of a program of experimental and analytical research on thebehavior of rain erosion resistant coatings is reported. The objectives were todevelop a Split Hopkinson Pressure Bar facility, and to develop the necessarytechniques for measuring the dynamic response of coating materials. Thedynamic testing facility which has been developed is capable of obtainingstress-strain curves under compressive loadings up to a strain rate of ten to thefourth power in/in/sec., and up to 500 F. Impact tests have provided preliminarydynamic stress-strain curves for the following materials: 1100-0 aluminum, MIL-C-7439 Neoprene, Hill AFB Polyurethane, AMD Polyurethane Type G-6, and anacrylic plastic. The contrasting dynamic properties observed for these materialsclearly indicate their relative capabilities to resist rain erosion and inhibitadhesion failures. (Author, modified-PL).
Author: Arthur Thomas Sales
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages :
Get Book Here
Book Description
Author: R. B. King
Publisher:
ISBN:
Category : Rain erosion
Languages : en
Pages : 22
Get Book Here
Book Description
Author: AF. Conn
Publisher:
ISBN:
Category : Cavitation
Languages : en
Pages : 22
Get Book Here
Book Description
The latest results from a study of the dynamic behavior of rain erosion-resistant coating and substrate materials are described. The correlations between rocket sled erosion data and fracture stresses determined from single-impact tests with a split Hopkinson pressure bar facility have been extended to include polyurethane. The results of tests within a small-scale erosion facility, and analyses of large whirling-arm studies, have shown that a fatigue type of behavior, already found to be applicable for an acrylic plastic, may also be used to describe the rain erosion resistance of elastomeric coatings such as polyurethane, and the glass fiber-reinforced epoxy composite substrates which are frequently utilized for radome construction. The importance of the "dynamic recovery rate" or relaxation time, and stress wave interactions, in understanding the rain erosion phenomenon is described in this paper. The applicability of the elastic-plastic, uniaxial stress wave theory for making rain erosion predictions is also discussed.
