Skip to Main Content
The serpentine end-matched joint: evaluating strength and stabilityAuthor(s): Charles J. Gatchell; Curtis C. Peters
Source: Res. Pap. NE-485. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
PDF: View PDF (1.4 MB)
DescriptionThe Serpentine end-matched (Sem) joint is a precisely machined butt joint with a sine wave shape. The joint is not readily visible to the eye and performs well in panels made of sugar maple, red oak, black walnut, and black cherry. The Sem joint is unaffected by changes in equilibrium moisture content from 6 to 12 to 18 to 6 percent. Panels containing Sem joints have about the same stiffness as panels without Sem joints. When tested to failure in bending, panels with Sem joints were weaker than control panels. However, the panels had to bend much farther than nonstructural applications would dictate before failure occurred. When making the joint, some side pressure and end pressures of 60 to 240 psi are needed.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
CitationGatchell, Charles J.; Peters, Curtis C. 1981. The serpentine end-matched joint: evaluating strength and stability. Res. Pap. NE-485. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 8p.
KeywordsPanels, end glueing, numerical control routers
- Lumber volume and value recovery from small-diameter black cherry, sugar maple, and red oak logs
- Ozone-induced accelerated foliar senescence: implications for toxicity and compensation
- Species composition changes under individual tree selection cutting in cove hardwoods
XML: View XML