free ebooks review rapidshare, megaupload |
|
|
Ebook home > personality > social sciences >
Accelerated Aging: Photochemical and Thermal Aspects (Research in Conservation Technical Report)
Accelerated Aging: Photochemical and Thermal Aspects (Research in Conservation Technical Report) Summary:By Robert L. Feller
Written by a renowned expert in the field, this book presents an overview of the results of research using accelerated aging tests. The emphasis is on the chemical aspects of photochemical stability, but thermally initiated deterioration is also discussed. Although not a "how-to" book, it does introduce the reasoning, limitations, and principles underlying the concept of accelerated aging. An extensive bibliography provides conservators and conservation scientists with an invaluable source for further research and exploration. The Getty Conservation InstituteThe Getty Conservation Institute, an operating program of the J. Paul Getty Trust, is committed to raising public awareness of the importance of preserving cultural heritage worldwide and to furthering scientific knowledge and professional practice in the field of conservation. The Institute conducts research, training, documentation, and conservation activities in several major areas including objects and collections, archaeological sites and monuments, and historic buildings and sites.Research in Conservation This reference series is intended to make available the findings of research conducted by the Getty Conservation Institute and its individual and institutional research partners, as well as state-of-the-art reviews of conservation literature. Each volume covers a separate topic of current interest and concern to conservators. Other volumes in the Research in Conservation series include: Cellulose Nitrate in Conservation (1988), Statistical Analysis in Art Conservation Research (1988), Evaluation of Cellulose Ethers for Conservation (1990), Protection of Art from Atmospheric Ozone (1990), Epoxy Resins in Stone Conservation (1992), and Airborne Particles in Museums (1993). The difficulties inherent in accelerated-aging procedures are nicely represented by the egg. Age it at one temperature, and you get a rotten egg; at a much higher temperature, a fried one; and in between, a chicken. These three conditions produce markedly different results in ranking eggs, predicting the texture of omelets, or describing the deterioration mechanisms of chickens. In his preface, Robert L. Feller remarks that after many years of writing, he must conclude that “one most often writes for oneself” in trying to understand a new field—hence, the author becomes his or her most important audience. While this is certainly a penetrating observation and defines Feller’s lifelong dedication to his science, it only partially explains the genesis of this book, which I came to understand through numerous conversations with the author over the years. At the start of his career, when Feller was just beginning to grapple with the issues of ranking products, estimating service life, and studying the mechanisms of deterioration of conservation materials, what he would have wished for most in the 1950s and ’60s was a review in hand that presented a path through the problems and potentialities of accelerated aging. Such a review was yet to be written, but the pitfalls were clearly known to exist. In those days, the unnerving inadequacies of accelerated aging must have hung like the sword of Damocles over the heads of both the cautious and the foolhardy researcher alike. The only difference being that the foolhardy never looked up, and Feller did—doubtlessly terrified at the relationship between the suspending hair’s tensile strength and his own vulnerability to error. Scientists working in industry or producing consumer products can perhaps be largely forgiven for their oversight, because it’s normally not in their best interests to produce goods that will not need to be replaced. But for scientists advocating materials that will be applied to priceless works of art, not looking up can be disastrous. Those pitfalls still exist, and the audience that needs to consider their depth has grown enormously. At one time the total fraternity of full-time individuals carrying out technical studies of works of art in the United States could all get into one taxicab together. By the time Robert Feller began working on protective coatings, this group had soared to around twenty, and the concept of “conservation science” slowly began to emerge. So new, unfettered, and interdisciplinary was this “science,” George Stout characterized it as little more than a “mongrel pup that had clawed through the academic fence.” Since then, however, the growth worldwide has expanded by a factor of ten, and the pup now has an academic pedigree. From this vantage point, a carefully considered treatment on accelerated aging is long overdue, for it is our ultimate desire and dream that materials and practices should last as long as the objects to which they are applied. If that were the case today, we would have no need for conservation scientists; but the increase in research over the last two decades and the concerns and doubts many conservators openly voice clearly illustrates how far short of that goal conservation remains. This book is written for those who will use accelerated aging, particularly photochemical and thermal aging, to push the performance envelope for these products as far as possible and assist in making their results more meaningful and relevant. Does this mean, then, that the audience is limited to conservation scientists? We at the Getty Conservation Institute believe the audience is much wider. For most people, a book such as this will require a degree of dedication, and some conservators may encounter difficulties. Yet Robert Feller brings a rather unique and refreshing gift for communicating the concepts of accelerated aging against the backdrop of materials science development. He selects literature and materials in order to reinforce his points and weaves a discourse that is both informative and a recurring call back to fundamentals. The persistent reader will certainly find a wealth of interrelated material that simply does not exist in one place elsewhere. James R. Druzik Conservation Scientist, The Getty Conservation Institute NEWER EBOOKS
Sponsored LinksAccelerated Aging: Photochemical and Thermal Aspects (Research in Conservation Technical Report) Keywordsresearch aging accelerated getty feller institute scientists materials conservators audience robert products deterioration results photochemical exist conservation cellulose difficulties accelerated aging conservation institute getty conservation cellulose nitrate conservation series volume covers conservation statistical statistical analysis research evaluation conservation research getty conservation instituteBookmark Accelerated Aging: Photochemical and Thermal Aspects (Research in Conservation Technical Report)Hyperlink code:
|
|
Architecture
Audiobooks
Business
