5.1.5 Cylindrical Substrates

The bonding of cylindrical elements (rods) with a head-to-head or butt joint should be avoided due to the critical sensitivity to bending moments (peel/buckling). Much like planar substrates, cylindrical assemblies joined with this method are particularly weak.

This shortcoming may be overcome by utilising different geometries characterised by greater bending strength and greater extension of the bonded surface. As can be seen in Figure 118, a strong and effective joint requires engineering with geometries that allow stresses to be evenly distributed over the bond area. These examples are representative only and are not a comprehensive list.

An example of this joint in Figure 119 includes the bonding of needles in medical devices.

Figure 118 More or less favourable loads on joints. Better results are obtained with a larger bonding surface
LOW RESISTANCE POSSIBLE DESIGN SOLUTIONS
Figure 119 Examples of coaxial bonding between cylindrical parts

Table of contents

Already have an account? Sign in

+33,000
professionals

have already
signed up

Award winning manual

Platinum Award for LOCTITE®X Digital Manual

The Digital Manual is for professionals by professionals

The manual is made entirely for you. However, if you’re still not convinced that free industry knowledge is for you, take a look at these user testimonials from the users of the manual.

"The topics are such that I can help take design related decisions very well at work. It's an interesting and knowledgeable read, I recommended my other colleagues to have a look at the manual as well."

Hanumant, Production Incharge

"The manual's chapters significantly enhanced my comprehension of various engineering topics. The manual adeptly presents explanations and examples of concepts, showcasing a high level of clarity and effectiveness in its content."

Tejas, Mechanical Engineer from a renowned Engineering College

"The release of this manual by a renowned brand such as Loctite has proven to be highly motivating for students. Its authentic content serves as a source of inspiration, encouraging students to engage actively in reading and learning."

Padmakar Deshmukh, Professor at an Engineering College