Hydrogen Embrittlement. The Silent Killer.

What do we know about Hydrogen Embrittlement (HE)?

A stealthy invader, hydrogen, infiltrates the steel, compromising its integrity and leading to unexpected failures.

Entry of Hydrogen into the Fastener: Occurs predominantly during manufacturing or galvanizing processes, where hydrogen finds its way into the steel lattice.

Diffusion of Hydrogen: Hydrogen atoms diffuse towards regions of high tensile stress within the fastener, driven by the stress gradients.

Hydrogen Segregation: They nestle in grain boundaries, inclusions, dislocations, and other macrostructural traps within the steel.

Reach of Critical Hydrogen Concentration: Accumulation of hydrogen reaches a critical concentration, setting the stage for potential catastrophic failure.

Prevention and Hydrogen Relief: Employing rigorous manufacturing practices and postproduction treatments to minimize hydrogen ingress and promote its escape.

Inspection Procedure: Employ meticulous inspection protocols to detect and measure ΗΕ, ensuring the reliability of the fasteners

Share and educate: The more we know, the safer we are. Consult one of our experts at tsamourisfast.com.

Toyota Recalls 800,000 Vehicles for a Quick Clip Fix

Toyota’s bumper bummer? It’s all about the angle of the clips and screws. In a sweeping recall, the auto giant flags over 800K Highlanders in North America — your ride might just shed its
bumper cover on the road. Safety risk? Big yes. Quick fix: a dealer check-up, maybe new hardware, or a total do-over on the cover. It’s a hassle, but safety’s the prize. Your move? Check
online for Toyota’s December heads-up. Need those sturdy, road-worthy fasteners? Tsamouris has the muscle in clips and screws. Trust the fasteners experts.

In the Hermit Kingdom Loose Screws Opened the Path to Freedom

A border bristling with soldiers, where every step could be your last because of mines and fences sharp enough to slice the sky. This is the DMZ, a no-man’s-land splitting the Korean Peninsula into North and South.

Yet, in a twist that seems more like a scene from a suspense film, a North Korean man made it across — silently, unexpectedly, inexplicably. He was a former gymnast, they say, who used his skills to scale the formidable fence.

And then, the unbelievable part: the high-tech alarms, South Korea’s electronic eyes on the border, didn’t make a sound. The South’s military, faced with embarrassment, had to admit the breach. It turned out the culprit was a few loose screws — quite literally — in the sensor system, a flaw no one saw coming.

The tale begins on a crisp November morning when the man, whose life until then had played out under the watchful gaze of the North’s regime, decided to make a break for freedom. He crawled over that fence, and the alarms stayed silent, giving him a free path to a new life. South Korea’s soldiers, trained for the opposite of silence at this border, scrambled. The hunt was on.

How did he slip by? It was only later they found the sensors, their screws undone — a tiny oversight with enormous consequences. For a country that prides itself on vigilance against its unpredictable neighbor, this was more than a mishap; it was a moment of reckoning.

Questions flew like shrapnel: How could this happen? Who’s accountable? Can we make sure it never happens again? The military’s cheeks weren’t the only things burning. Their phones were, too, with calls for an explanation. They assured the public that every sensor is now under scrutiny, every screw tightened, every eye wide open.

This gymnast’s leap to liberty was rare, almost unheard of. Most who flee North Korea take a longer, no less perilous path through China. Yet, this man’s silent journey across the DMZ, under the moon’s watchful eye, is a stark reminder — sometimes, freedom’s call is so strong it can turn the world’s most dangerous borders into mere hurdles.

As South Korea tightens its screws, we’re reminded of the importance of the binding material in security and the fierce determination of the human spirit. One man’s dash to freedom underscores the countless untold stories still waiting on the other side of the fence.

 

The Physics Of Ice Screws

Many adventure sports in the GoPro era are all about the spectacle. They’re fast-paced and full of action. Ice 🧗‍♂️ climbing is different. It’s a slow, deliberate sport. And it’s beautiful in its quiet way.
Ice climbers use ice screws to secure themselves from the ice and prevent themselves from falling. The ice screws are connected to a 🪢 rope and are placed at an upward angle. If one climber falls, the other climber is pulled up by the rope. The anchor needs to be able to withstand a lot of force.
The ice screws started appearing in the 1950s and 60s. The earliest known ice screw is the MARWA screw, manufactured by Mariner Wastl in 1958. The MARWA screws were known to be unreliable, but the ice-screw idea was thus introduced to the climbing world.
However, it wasn’t until Greg Lowe, a gear hero, unveiled the “snarg” screw-piton hybrid that it took off about two decades later. The snarg’s hollow core is what allowed it to be so successful. This feature allowed for a much larger diameter and thus more screw surface area to be exposed to the ice. Snargs were popular in the 80s and 90s but have now been replaced by regular screws.
However, there is very little research on ❄️ ice screws and ice screw physics compared to the rest of the climbing. The results of a 1997 study were surprising and bit unnerving. The researchers spent years and many hundreds of ice screws attempting to answer basic questions about placement, screw length, and even what constitutes “good” climbing ice in the first place.
It turns out that screws are more likely to fall out when they are perpendicular to the force rather than when the force is along the threads. The strength of an ice screw placed at a downward angle is as much as twice that of a screw placed at an upward “negative” angle. This difference becomes less significant as the ice quality decreases and can be dangerous if “melt out” is possible.
A later study used a 💾 computer modeling technique known as finite-element analysis (FEA) and found that length doesn’t have a significant effect on screws. The load in a fall is highest at the top of the screw. This means that modern climbing ropes can absorb more shock the higher the climber is from the ground. Differential equations may be useful, but they cannot replace experience.
This is where screamers come in handy, as they add extra stretch to the system. This way, even in a low fall, where there is less rope to stretch, the shock can be stretched out, reducing the load per unit of time.
Be safe.

How Fasteners Harness The Power Of The Sun And the Wind

There’s more to renewable ⚡️ energy than just solar and 💨 wind power. Fasteners play an important role in harnessing the power of the sun and the wind.
Solar panels are held together by fasteners, and wind turbines rely on them to keep the blades attached to the rotor. That means that when it comes to renewable energy, fasteners are a critical part of the equation.
But what kind of fasteners are best for renewable energy applications? There are a few factors to consider when choosing fasteners for renewable energy applications.
1️⃣ First, they need to be able to withstand the elements. That means they need to be corrosion-resistant and able to withstand high temperatures.
2️⃣ Second, they need to be able to handle the vibration and movement that comes with being attached to a moving object like a wind turbine blade.
3️⃣ Third, they need to be strong enough to do their job. That means that they need to be made from high-strength materials.
4️⃣ Fourth, they need to be easy to install and remove. That’s because renewable energy applications often require maintenance and repairs.
5️⃣ Fifth, they need to be affordable. That’s because renewable energy is still a growing industry, and companies are always looking for ways to cut costs.
Contact us today to learn more about our fasteners and how they can help you achieve your renewable energy goals.

When Bangladesh’s $4 Billion Bridge Scandal Unscrewed Goverment

In 🗺 Bangladesh, a scandal erupted after TikTok videos of people unscrewing nuts and bolts on the newly built Padma Bridge went viral.
The Padma Bridge is a $4 billion project that took seven years to complete, and its opening would be a moment of pride for the Bangladeshi people. However, the videos of people allegedly unscrewing the bolts with their bare hands have called into question the quality of the construction. The TikTok videos were taken down, but the publicity damage was inevitable.
The 👮‍♀️ Criminal Investigation Department (CID) in Dhaka said that the person in the videos used tools, not just their hands, to unscrew the bolts. The TikTok 🦹 user was arrested and charged with sabotaging and damaging government undertakings, a crime under the Special Powers Act.
CID officials warned that anyone else caught tampering with the bolts would be arrested. The government denied the accusations of corruption and corner-cutting over quality in the construction of the bridge, but the scandal contributed to the 🗳 ousting of the ruling Awami League party.
Building high-stake safety infrastructure? Tsamouris experts are here in order to ensure that all fasteners are up to standard.

Scientists have developed robots that can screw and unscrew like humans

Scientists at the Skolkovo Institute of Science and 🦾 Technology in Moscow have studied automating the process of screwing and unscrewing for the intelligent factories of the future.
They have used 🫳 haptics, the study of the sense of touch, to understand how humans perform these tasks and then build robots that use the same technique.
They have discovered that humans use two different types of force to drive home a screw or release it—they first apply pressure or 🌪 axial force to push the screw into its socket and then a turning force or torque to turn the screw.
The team has also found that the required force depends on the type of screw head—screws with a Phillips head require significantly more axial force to avoid cam-outs than screws with a hex head.
After testing, the team found that hex heads are less likely to slip than Phillips heads when given the same axial force. Finally, when they programmed a robot to replicate the pattern of force, it performed well.
Whether a 🧍‍♀️ human or a robot, our fasteners are perfect for you.

Boeing Found That In Building Jets, There Are Some Things Robots Can’t Do

In the race to automation, there are some things that 🤖 robots can’t do as well as humans. After years of trial and error, Boeing has found this to be true in the construction of its 777X jetliners.
The company had been using robots to build two main fuselage sections for the ✈️ planes. The robots were working in tandem to drill holes precisely and fasten together metal panels held upright to create the outer frame of the hulking twin-engine jets. However, the robots were not as precise or reliable as needed.
The purpose of robots was to take the place of human mechanics who used hand-held tools to put 60,000 rivets into each airplane. Boeing struggled to keep the robots moving in sync on the outside and inside of the fuselage panels, which created production 👾 snarls and extra work for human employees.
Boeing has now switched to using skilled mechanics to manually insert fasteners into holes drilled along the circumference of the fuselage by an automated system. This new method is more reliable and requires less work by hand.
While 🔋 Tesla also famously tried to ditch workers for highly automated car and battery assembly lines, they too have found that in some cases, the technology can’t match the dexterity, ingenuity, and precision of human hands and eyes.
In the case of the 777X, Boeing has learned valuable lessons from its first foray into automation. The new method creates less 🧘 wear and tear on workers and is more efficient overall.
At Tsamouris, we use real humans and not robots to support you with your fasteners needs.

Fasteners For Concrete

There are many types of fasteners available for use with 🗿 concrete. The most common fasteners include concrete nails, concrete screws, and concrete anchors. Each type of fastener has its own set of advantages and disadvantages.

Concrete nails are the most common type of fastener used for light-duty applications. They are easy to install and remove, and they are not affected by vibration or 😱 shock. However, concrete nails are not as strong as other types of fasteners and can come loose over time.

Concrete screws are stronger than nails and are ideal for 🏋️‍♂️ heavy-duty applications. They are also less likely to come loose than nails, but they can be more difficult to install and remove.

Concrete ⚓️ anchors are the strongest type of fastener and are perfect for applications where the highest level of strength is required. They are also the most challenging to install and remove.

When choosing fasteners for your concrete project, it is important to consider the type of application and the level of strength required. For most applications, concrete 🔨 nails or screws will suffice. However, for applications where the highest level of strength is required, concrete anchors are the best option.

If you’re not sure which type of fastener is right for your project, our team of experts can help. Contact us today to get started.

One Small Fastener For Man One Giant Ellon For Mankind

Pyrotechnic 🧨 fasteners (also called an explosive bolt, or pyro) are commonly used as a space rocket detachment system. They are used to quickly and efficiently release a rocket from its launch vehicle, allowing it to begin its ascent into 🪐 space.

Pyrotechnic bolts are typically made of a high-strength material, such as steel or titanium, and are designed to withstand the high temperatures and pressures of a space launch. They are also usually equipped with a ⏲ timer or other mechanism to ensure that they detonate at the correct time.

Space rockets are subject to extreme forces during launch, so it is important that the pyrotechnic bolts detonate correctly and at the right time in order to ensure a safe and successful launch. If the bolts do not detonate 💥 correctly, the rocket could be damaged or even destroyed.

Pyrotechnic bolts are an essential part of the space launch process and have been used successfully for many years. But Elon Musk’s 🧑‍🚀 SpaceX has a different take on them by using pneumatic detaching mechanism for their Falcon 9 rocket. This technology is more advanced, reliable and safe as compared to the pyroteumatic bolts. Pneumatic system uses compressed gas to generate the force required for detachment. The gas is directed through a series of valves and chambers to create the required amount of ☄️ force. The system is also equipped with a safety valve to release the gas in case of an emergency.

Pneumatic system has many advantages over pyrotechnic system. It is more reliable as there is no possibility of accidental detonation. It is also safer as the gas is released slowly and can be directed away from the rocket. Pneumatic system is also more precise and can be used to detach the rocket at a specific time.