Together with ATEQ, a specialist in leak detection equipment, as well as a final year student at the University of Leuven, Dejond has developed a reliable leak detection test method for watertight rivet nuts. Hannes Lecluse, a final year student at the University of Leuven, was assigned to develop a leak detection test method for blind rivet nuts as the subject of his master’s thesis. Together...

Here Cesar Certini, owner of CERMAC Srl – an Italian testing machine manufacturer – focuses on pendulum impact testing machines and how they can be used to determine the amount of energy absorbed by a material during fracture. Pendulum impact testing machines are high energy machines that can be used to determine the energy dissipated during fracture of a wide variety of materials, including hi...

Constructing a new bridge in record time is always a challenge, but when it is to replace one that tragically collapsed it becomes an even higher profile project. That is why Nord-Lock Group was proud to offer its wedge-locking washers, which utilise tension instead of friction to secure each bolted joint, as a solution for the new bridge. Tragedy struck Genoa, north-western Italy, on the morni...

Can a complete workbench be assembled quickly without tools and will it still withstand high strains? A case study with high-quality construction tool manufacturer Haromac proves that this can be done using DIRAK-SNAP-Technology fasteners. Oliver Lück, managing director of Haromac Werkzeugfabrik GmbH & Co KG, explains: “Workbenches presented a new challenge for us. They had to provide good...

Scell-it has launched a new economical range of tools including the E-007 and E-007-T, which it states are the world’s first battery powered tools for installing hollow wall anchors. Whilst the E-007 sets anchors with a screw, the E-007-T uses a built in mandrel to set anchors without a screw. Both tools can set a range of M4 to M8 and a setting adjustment dial on the back of the tools allow fo...

In this article, APM Hexseal discusses what washers actually are and why they’re typically used with fasteners such as screws and bolts to distribute the load of the fastener. A washer is a mechanical component that consists of a circular flattened metal, plastic, or rubber disk with a hole through the middle. As well as to distribute the load, washers are typically used to prevent damage to se...

HEICO-TEC tension nuts provide quick and easy preloading for particularly large bolted joints and are available in a wide range of standardised sizes. However, what happens if the standard does not fit? At the end of last year, HEICO Group faced a truly big and unusual challenge – manufacturing a special tension nut with an outer diameter of 620mm. This gigantic tension nut was used to fasten a...

In the world of electrical engineering, loose screw connections can add up to costly power failures, which is why teckentrup has developed a locking element – the NSK-E – for reliable electrical connections. According to a survey by a Canadian energy supplier, almost 40% of all power failures can be traced back to loose contact parts. Today, locking elements from mechanical screw connections ar...

Here SMT Srl, the independent testing laboratory and mechanical workshop – with over 30 years of experience in mechanical, chemical, metallographic and mechanical fracture testing – looks at how the impact test was discovered and developed. During the nineteenth century the railway had an important and rapid development both in Europe and in the United States. All of this involved building loco...

In addition to technical and commercial advantages, the environmental compatibility and sustainability of the Expanite process is playing an increasingly important role for customers. Expanite is becoming a popular alternative to classic fluoroplastic coatings such as Teflon®, Halar® or Xylan®. After the discovery of PTFE (polytetrafluoroethylene) – also known as Teflon® – in 1938, some time pa...