The objectives of this research were to investigate the heat resistant performance of a structural adhesive and to analyze the contribution of the adhesive to the chemical emissions from the glued wood products affected by the elevated temperatures. Phenol-resorcinolormaldehyde (PRF) and two wood species, southern pine (Pinus palustris) and Douglasir (Pseudotsuga menziesii), were investigated. The dynamic mechanical analysis (DMA) test results showed that the heat durability performance of cured PRF resin was better than that of the two wood species used in this study. The results indicated that the fire safety of PRF bonded wood products should be comparable to solid wood products. The pyroysis products obtained from pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) system showed that most of the pyrolysis products of glued wood samples were same as those of wood and adhesive samples at the same temperature level except a few compounds, such as carbon disulfide, Cyclopropyl carbinol, acetaldehyde, furfural and others.

The use of engineered wood products (EWP) in residential construction has increased in recent years. Most specifications for the installation of these components are found in proprietary manufacturer literature rather than in the building code. Although some home inspections include EWP prescriptive compliance, very little applied and academic literature addresses this practice. This lack of practical information and the lack of standardized inspection methods can result in undetected non-compliant EWP installations that fail to meet the minimum safety provisions of the building code. The goal of this project was to develop a visual inspection methodology, associated knowledge base, and software application for the inspection of EWPs and connector hardware (CH) in new residential construction at the pre-drywall stage. The methodology was based upon subject matter expert (SME) inputs and validation was derived from the use of a modified Delphi method that was able to the gather, collate, refine, and validate the research process and outputs based on the expertise of the subject matter experts. The concept of high face validity was used to establish project validity. Installation problems with EWPs and CH were noted by the SMEs partly because the use and installation instructions for proprietary products are not found in building codes. Building code officials (BCO) and home inspector (HI) SME responses indicated a need for a methodology and software to aid in the inspection process. Although authoritative reference materials for prescriptive installation are available, the scope of material is not consistent between manufacturers, and is presented in different formats for different brands. The developed software application provides ready access to reference materials needed for EWP and CH installations. No widely accepted inspection methodology is available, although the HI SMEs used systematic inspection methods. Inspection methods such as the top-down method and sighting along the patterns of repetitious framing elements can improve the detection of non-compliant installations. BCO and HI SMEs identified both component-specific and zone-specific techniques as a part of the systematic inspection methodology. Definable high risk areas for each EWP and CH were identified and the associated inspection methods may help the inspector reduce the incidence of undetected problem areas. Knowledge of the high-risk areas may also enhance the inspection. The developed software application was found to be a useful inspection tool. BCO and HI SMEs determined that functions of the computer software necessary for use included ease of use, onboard reference materials, specific inspection techniques, prepared comments, and technical illustrations. / Ph. D.

This research presents results of innovation management practices and sustainability of continuous improvement. Innovation is recognized as a growth tool for economies in general however not all economy sectors have innovation as a strategy. This research served as a case study to analyze how innovation is managed within innovative firms to help less innovative sectors, such as the wood products industry, to become profitable. Among the observed innovation management practices, this study was able to identify the use of continuous improvement to support incremental innovation. Although, continuous improvement is well known and accepted, there are still challenges to reach a sustainable state of continuous improvement. This research also addresses the difficulty in sustaining continuous improvement through a longitudinal case study. A literature review was conducted to identify factors influencing the sustainability of the continuous improvement. These factors were gathered within a research framework which functioned as the main source to establish the questionnaire used as the research tool. Utilizing this tool, the study evaluated the hypotheses relating to the effects of time, location and company type on the behavior of the enabling and inhibiting factors, and the relationships among them. Results demonstrated that time has no effect on factors affecting the sustainability of the continuous improvement, although changes affect how the factors are perceived as success factors in sustaining continuous improvement. The study also concluded that type of company and location impact how the inhibiting and enabling factors are perceived as supporters of the sustainability of the continuous improvement. Finally, the study revealed that these factors are correlated among them, thus sustainability is the result of a dynamic multifactor process rather that an unique factor. In addition to this new framework, the study also developed a self-assessment tool to be used for continuous improvement practitioners. With this tool, the new developed framework can be continuously monitored and proper and informed action can be taken by managers to address any observed gap in sustaining continuous improvement. Finally, the study also brings an example of interdisciplinary research which gathers quantitative methods from the statistics field, and qualitative methods from the business and social science fields. / Ph. D.

A multivariate measure of Porter's (1980) dimensions of competitive strategy was used to determine the competitive structure of the U.S. wood household furniture industry. Firms were categorized into strategic groups using hierarchical agglomerate cluster analysis based on factor scores. Cluster analysis resulted in a differentiation, an overall low cost, and a focus group (which appeared as a sub-group of the differentiation group). No differences (based on MANDOVA) were found between strategic groups based on performance (ROA or growth), or between firms with a distinct strategic orientation and those that appeared to be "stuck in the middle" (Porter 1980, p.41). Firms were asked to predict changes in their strategies over the following five years (1993 to 1998). The overall low cost group predicted increased emphasis primarily on the differentiation dimension, the differentiation group predicted increased emphasis on the focus dimension and the focus group predicted greater emphasis would be placed on the overall low cost and differentiation dimensions. Three firms chosen based on their close proximity to strategic group centroids were studied through case analyses to detennine how these firms operationalize their intended strategy. The firm classified as a differentiation strategist: emphasized product style and company image, and was very customer-oriented. The overall low cost firm's strategy involved manufacturing generic products exhibiting mass appeal and offering these products at the lowest cost. The focus firm aggressively targeted a particular market segment to achieve competitive advantage. The structure of the industry was investigated based of value of shipments during 1993. Over 60% of reported shipments were targeted toward a medium price point. Nearly 85% of shipments were from the largest 25% of responding firms. The majority of furniture shipped by respondents was bedroom furniture, followed by dining room furniture (19%) and occasional tables (11 %). Over one third of reported shipments were through local and regional full line furniture stores. Other important channels of distribution were national furniture chains (20% of total shipments) and discount chains, department stores and mass merchants (14%). Of the total reported value, 6.0% were exported, 15.6% were consumer ready-to-assemble (RTA) furniture and 16.9% were new products. / Ph. D.

A methodology was developed for determining the economic feasibility of a wood products industrial park. The methodology consists of twelve steps that address the goals of park owners, the feasibility of secondary manufacturing alternatives, the feasibility of the development corporation, and the financial areas needing management attention. Prerequisites to the financial analysis include market and technical analyses. Community impact analysis was also acknowledged as an important component of an overall feasibility analysis. A case study was performed that consisted of an economic feasibility analysis for a wood products industrial park in Southwest Virginia. The case study assumed private ownership and found that the best mix of park tenants included: an edge-glued dimension panel manufacturer, a solid dimension lumber manufacturer, a custom millwork manufacturer, and a pallet manufacturer. Primary manufacturing and marketing services were included in the preferred park formation as subsidiaries of the park development corporation. The park was predicted to have a strong positive impact on the regional economy. / Master of Science

Kaizen implementation and other continuous improvement practices can be used by companies to lower manufacturing costs and increase product value. Kaizen activities are one way that wood products companies can increase their competitiveness. Being able to measure the effectiveness of Kaizen events is important to factors that contribute to Kaizen effectiveness as well as identifying the success of Kaizen implementation. However, little research has focused on the implementation of Kaizen and other continuous improvement methods within the wood products industry or on the perceptions of employees within this industry regarding either the motivators for, barriers to, and effectiveness of perceptions of Kaizen, or the drivers affecting Kaizen implementation. The goal of this research is to develop a tool to measure the effectiveness of Kaizen and to apply this tool to companies within the wood products industry. To accomplish this research goal, a case study approach was used in examining how two U.S. wood products companies implemented Kaizen and other continuous improvement initiatives and how employees at these companies viewed such implementation. As part of this case study, interviews were conducted with staff in each company and surveys were administered to production and non-production employees at each company. A tool was developed to measure the perceived effectiveness of Kaizen events, and this tool was tested using the survey data were collected from each company. The results from these analyses show statistically significant differences in how production employees across companies viewed the following: motivators related to cost and quality outcomes, as well as the success of other companies, as motivators for Kaizen; and barriers related to middle management, time, money, technology, and poor past experiences. Poor past experience with Kaizen were also viewed significantly differently by production and non-production employees in one of the companies studied. The results also show that perceptions of productivity improvements were the most significant predictor of the perceived effectiveness of Kaizen implementation. These results and the development of a tool to measure Kaizen will help guide and improve future Kaizen and other continuous improvement efforts within the wood products industry and provide insights for future research. / Master of Science

Thesis (M.Sc.)--Memorial University of Newfoundland, 2002. / Restricted until October 2003. Bibliography: leaves 147-151.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 49-50). Also available via the Internet.

Thesis (M.S.) in Forestry--University of Maine, 2000. / Includes vita. Advisory Committee: Stephen M. Shaler, Prof. of Wood Science, Advisor; Roberto Anido-Lopez, Asst. Prof. of Civil Engineering; Habib J. Dagher, Prof. of Civil Engineering; Douglas J. Gardner, Assoc. Prof. of Wood Science; Eric N. Landis, Asst. Prof. of Civil Engineering. Includes bibliographical references (leaves 22-24, 48-52).

A mail survey of the US secondary wood products industry was conducted to assess the current species used and the market potential for the use of "non-traditional" species. Seven market segments within the secondary wood products industry were surveyed including the cabinet, flooring, millwork, office furniture, dimension and component, window and door, and household furniture market segments. Information from three hundred and fifty-seven was analyzed for this research. The results indicate that the secondary wood products industry is using a majority of "traditional" species to manufacture their products. For the industry as a whole, oak was the most popular species, which included the use of both red and white oak. Red oak average board footage use was calculated to be 1.3 million per year in the secondary industry. "Traditional" species for the component manufacturing segment were determined to be red oak, white oak, hard maple, cherry, ash, and soft maple. These species are being produced because of consumer demand. The component segment sells most of its products to the household furniture and cabinet market segment. Both of these markets are driven by fashion trends and what consumers view as "in-style." The component segment will be able to produce more "non-traditional" wood products when their customers (i.e., the six other market segments that were surveyed) begin to make finished goods with these species. Analysis showed that significant differences did exist between "non-traditional" species using companies and "traditional" companies on their ratings of component and component supplier attributes. Consistent supply was one attribute that was rated higher by many segments' "non-traditional" species users. The issue of supply will need to be addressed before many of these companies will be willing to use more "non-traditional" species. Within the overall secondary industry there was a significant difference between the importance that "traditional" species users placed on consistent supply and the importance that "non-traditional" species users placed on this attribute. "Non-traditional" species users were more concerned with having a consistent supply of their raw material and component products. For "non-traditional" species to be successful within the secondary wood products industry, a proven supply line must first be established. There is a potential to use "non-traditional" species in all of the markets that were surveyed. The millwork segment displays the most potential. This market segment already uses a wide variety of wood species, which shows there is no dominate species that is desired. The office furniture market segment also displays potential for "non-traditional" species. This segment desires a low priced raw material and "non-traditional" species can fulfill that need. / Master of Science