Ebook: Delamination in Wood, Wood Products and Wood-Based Composites

In the last quarter century, delamination has come to mean more than just a failure in adhesion between layers of bonded composite plies that might affect their load-bearing capacity. Ever-increasing computer power has meant that we can now detect and analyze delamination between, for example, cell walls in solid wood. This fast-moving and critically important field of study is covered in a book that provides everyone from manufacturers to research scientists the state of the art in wood delamination studies. Divided into three sections, the book first details the general aspects of the subject, from basic information including terminology, to the theoretical basis for the evaluation of delamination. A settled terminology in this subject area is a first key goal of the book, as the terms which describe delamination in wood and wood-based composites are numerous and often confusing. The second section examines different and highly specialized methods for delamination detection such as confocal laser scanning microscopy, light microscopy, scanning electron microscopy and ultrasonics. Ways in which NDE (non-destructive evaluation) can be employed to detect and locate defects are also covered. The book’s final section focuses on the practical aspects of this defect in a wide range of wood products covering the spectrum from trees, logs, laminated panels and glued laminated timbers to parquet floors. Intended as a primary reference, this book covers everything from the microscopic, anatomical level of delamination within solid wood sections to an examination of the interface of wood and its surface coatings. It provides readers with the perspective of industry as well as laboratory and is thus a highly practical sourcebook for wood engineers working in manufacturing as well as a comprehensively referenced text for materials scientists wrestling with the theory underlying the subject.

---

In the last quarter century, delamination has come to mean more than just a failure in adhesion between layers of bonded composite plies that might affect their load-bearing capacity. Ever-increasing computer power has meant that we can now detect and analyze delamination between, for example, cell walls in solid wood. This fast-moving and critically important field of study is covered in a book that provides everyone from manufacturers to research scientists the state of the art in wood delamination studies. Divided into three sections, the book first details the general aspects of the subject, from basic information including terminology, to the theoretical basis for the evaluation of delamination. A settled terminology in this subject area is a first key goal of the book, as the terms which describe delamination in wood and wood-based composites are numerous and often confusing. The second section examines different and highly specialized methods for delamination detection such as confocal laser scanning microscopy, light microscopy, scanning electron microscopy and ultrasonics. Ways in which NDE (non-destructive evaluation) can be employed to detect and locate defects are also covered. The book’s final section focuses on the practical aspects of this defect in a wide range of wood products covering the spectrum from trees, logs, laminated panels and glued laminated timbers to parquet floors. Intended as a primary reference, this book covers everything from the microscopic, anatomical level of delamination within solid wood sections to an examination of the interface of wood and its surface coatings. It provides readers with the perspective of industry as well as laboratory and is thus a highly practical sourcebook for wood engineers working in manufacturing as well as a comprehensively referenced text for materials scientists wrestling with the theory underlying the subject.

---

In the last quarter century, delamination has come to mean more than just a failure in adhesion between layers of bonded composite plies that might affect their load-bearing capacity. Ever-increasing computer power has meant that we can now detect and analyze delamination between, for example, cell walls in solid wood. This fast-moving and critically important field of study is covered in a book that provides everyone from manufacturers to research scientists the state of the art in wood delamination studies. Divided into three sections, the book first details the general aspects of the subject, from basic information including terminology, to the theoretical basis for the evaluation of delamination. A settled terminology in this subject area is a first key goal of the book, as the terms which describe delamination in wood and wood-based composites are numerous and often confusing. The second section examines different and highly specialized methods for delamination detection such as confocal laser scanning microscopy, light microscopy, scanning electron microscopy and ultrasonics. Ways in which NDE (non-destructive evaluation) can be employed to detect and locate defects are also covered. The book’s final section focuses on the practical aspects of this defect in a wide range of wood products covering the spectrum from trees, logs, laminated panels and glued laminated timbers to parquet floors. Intended as a primary reference, this book covers everything from the microscopic, anatomical level of delamination within solid wood sections to an examination of the interface of wood and its surface coatings. It provides readers with the perspective of industry as well as laboratory and is thus a highly practical sourcebook for wood engineers working in manufacturing as well as a comprehensively referenced text for materials scientists wrestling with the theory underlying the subject.
Content:
Front Matter....Pages i-xiv
Front Matter....Pages 1-1
Introduction....Pages 3-16
Terms for Delamination in Wood Science and Technology....Pages 17-31
Delamination Detection – A Vibration-Based Approach....Pages 33-50
Initiation and Growth of Delamination in Wood and Wood-Based Composites, a Fracture Mechanics Approach....Pages 51-100
A Theoretical Model of Collapse Recovery....Pages 101-119
Front Matter....Pages 121-121
Delamination of Wood at the Microscopic Scale: Current Knowledge and Methods....Pages 123-144
Probing the Wood Coating Interface at High Resolution....Pages 145-157
Delamination in Timber Induced by Microwave Energy....Pages 159-172
Delaminations Induced by Weathering in Wood and Wood-Based Composites Panels....Pages 173-196
Delamination in Timber Induced by Drying....Pages 197-212
Front Matter....Pages 213-213
Industry Prospective of Delamination in Wood and Wood Products....Pages 215-236
Internal Checking During Eucalypt Processing....Pages 237-254
Acoustic Tomography for Tension Wood Detection in Eucalypts....Pages 255-268
The Hygroscopic Warping of Cross-Laminated Timber....Pages 269-285
Acoustic Emission Activity Induced by Delamination and Fracture of Wood Structure....Pages 287-306
Delamination Detection in Wood – Based Composites Panel Products Using Ultrasonic Techniques....Pages 307-351
Delamination Evaluation of in-Service Glulam Beams and other Structural Members Via Ultrasonics....Pages 353-364
Moisture Induced Stresses and Deformations in Parquet Floors....Pages 365-378
Glue Line Nondestructive Assessment in Timber Laminates with an Air-Coupled Ultrasonic Technique....Pages 379-387
From Present Researches to Future Developments....Pages 389-391
Back Matter....Pages 393-401

---

In the last quarter century, delamination has come to mean more than just a failure in adhesion between layers of bonded composite plies that might affect their load-bearing capacity. Ever-increasing computer power has meant that we can now detect and analyze delamination between, for example, cell walls in solid wood. This fast-moving and critically important field of study is covered in a book that provides everyone from manufacturers to research scientists the state of the art in wood delamination studies. Divided into three sections, the book first details the general aspects of the subject, from basic information including terminology, to the theoretical basis for the evaluation of delamination. A settled terminology in this subject area is a first key goal of the book, as the terms which describe delamination in wood and wood-based composites are numerous and often confusing. The second section examines different and highly specialized methods for delamination detection such as confocal laser scanning microscopy, light microscopy, scanning electron microscopy and ultrasonics. Ways in which NDE (non-destructive evaluation) can be employed to detect and locate defects are also covered. The book’s final section focuses on the practical aspects of this defect in a wide range of wood products covering the spectrum from trees, logs, laminated panels and glued laminated timbers to parquet floors. Intended as a primary reference, this book covers everything from the microscopic, anatomical level of delamination within solid wood sections to an examination of the interface of wood and its surface coatings. It provides readers with the perspective of industry as well as laboratory and is thus a highly practical sourcebook for wood engineers working in manufacturing as well as a comprehensively referenced text for materials scientists wrestling with the theory underlying the subject.
Content:
Front Matter....Pages i-xiv
Front Matter....Pages 1-1
Introduction....Pages 3-16
Terms for Delamination in Wood Science and Technology....Pages 17-31
Delamination Detection – A Vibration-Based Approach....Pages 33-50
Initiation and Growth of Delamination in Wood and Wood-Based Composites, a Fracture Mechanics Approach....Pages 51-100
A Theoretical Model of Collapse Recovery....Pages 101-119
Front Matter....Pages 121-121
Delamination of Wood at the Microscopic Scale: Current Knowledge and Methods....Pages 123-144
Probing the Wood Coating Interface at High Resolution....Pages 145-157
Delamination in Timber Induced by Microwave Energy....Pages 159-172
Delaminations Induced by Weathering in Wood and Wood-Based Composites Panels....Pages 173-196
Delamination in Timber Induced by Drying....Pages 197-212
Front Matter....Pages 213-213
Industry Prospective of Delamination in Wood and Wood Products....Pages 215-236
Internal Checking During Eucalypt Processing....Pages 237-254
Acoustic Tomography for Tension Wood Detection in Eucalypts....Pages 255-268
The Hygroscopic Warping of Cross-Laminated Timber....Pages 269-285
Acoustic Emission Activity Induced by Delamination and Fracture of Wood Structure....Pages 287-306
Delamination Detection in Wood – Based Composites Panel Products Using Ultrasonic Techniques....Pages 307-351
Delamination Evaluation of in-Service Glulam Beams and other Structural Members Via Ultrasonics....Pages 353-364
Moisture Induced Stresses and Deformations in Parquet Floors....Pages 365-378
Glue Line Nondestructive Assessment in Timber Laminates with an Air-Coupled Ultrasonic Technique....Pages 379-387
From Present Researches to Future Developments....Pages 389-391
Back Matter....Pages 393-401
....