Bonding Processes Tutorial
Structural Adhesive Bonding Materials and Processes Tutorial - Abstract
Structural adhesive bonding is an area of remarkable complexity contained in the bond’s seven thousandths of an inch-thick ribbon. This tutorial will attempt to clarify why structural adhesive bonding has a frequently unacceptable level of surprise, rarely good. These surprises can continue throughout a bond’s life cycle, not just during development and manufacturing.
Many failures of bonded structure are the result of misunderstanding (or miscommunicating) issues associated with bond processing, whether during original manufacture, field support, or repair. This tutorial covers bonding materials commonly used, and the processing they require to create successful bonded structure, starting with the simplest of bonds then proceeding incrementally up to the most challenging.
One of the central difficulties with structural adhesive bonding is that there appears to be at least one conspicuous (and perhaps even reasonable) exception to almost every rule or guideline considered. Rather than trying to provide absolute guidance in such an environment, the tutorial will attempt to provide counsel on how to proceed with the variety of answers, some contradicting each other, already found in the literature and in practice.
The tutorial is presented from the perspective of Materials & Process Engineering. While many areas of expertise must work together well to achieve bond system success, M&P has central responsibility for providing a good bond.
CMC Tutorial
Ceramic Matrix Composites Tutorial
Ceramic matrix composites (CMCs) have emerged as critical materials for the advancement of jet engines as well as other aero and energy related applications. The development of these materials for such applications has a history of over four decades. Though there are two main CMC systems, oxide and non-oxide, the non-oxide based composite systems will be emphasized here. This tutorial will focus on three primary areas:
- The driving force for CMCs and the backdrop for CMC development in relation to preceding materials such as superalloys and carbon fiber reinforced composite systems.
- What constitutes a CMC including CMC constituents, CMC mechanical behavior and toughening mechanisms, fiber architecture options and effects, and CMC processing approaches and their effects on properties will be described. Given this, there will be some discussion on the ability to optimize CMC properties.
- CMC performance, in particular performance when subject to elevated temperature stressed-oxidation environments. An overview of CMC strength degradation due to the effects of thermo-chemical-mechanical environments will be described considering the makeup of different CMC systems. In addition, design considerations and mitigation strategies will be discussed which include the need for environmental barrier coatings (EBCs) for long time thermo-mechanical applications.
Design Integrated Product Teams
Design IPT Tutorial with Case Studies
This tutorial offers a structured overview of Integrated Product and Process Teams (IPTs), emphasizing their formation, implementation, and impact across the product life cycle with overall objective of meeting specified needs within scheduling and cost constraints. Products considered in IPT examples will contain composite parts, including structures, manufacturing, maintenance, and other functional considerations.
The tutorial is intended for engineers and project managers and underscores the importance of multidisciplinary teams with the appropriate authority and expertise at critical stages of a project. It provides a structured framework for the IPT process, serving as both an introduction for those new to IPTs and a refresher for experienced practitioners to ensure a common baseline of understanding.