Strength of Transverse Fillet Weld – Design of Welded Joints – Design of Machine


Hello Friends here in this video we will see what is meant by Strength of Transverse Fillet Weld in this here I would be deriving a formula of strength strength means load carrying capacity for a transverse fill it well but for that purpose I have to draw a diagram so let us get started Here I am having two plates one is the upper plate and other is the lower plate now these two plates they are connected with the help of a welded joint here this indicates the joint that it is welded now when these two blades are connected there will be force acting on the upper plate next force acting on the lower plate because of the action of these two forces this joint it can break now for this joint we need to know that how much value of load this joint can resist and that is nothing but the strength of transverse fill it will for this fill it way we should know how much is the load carrying capacity so what we can do here is I’ll assume that this thickness of the plate is s and similarly upper plate will also have the same thickness so here I will say that first of all let s be the thickness of plate in mm next after this I’ll say that L be the length of weld this will also be in mm now this joint which we are saying which is the welded joint I can simplify this that is here it is having a diagram like this now what we can do here is join these two points so that we get a right angle triangle and here I will call it as triangle ABC this extra portion is nothing but it is called as re-enforcement this is a reinforcement which is provided for added strength so when we are analyzing the transverse fill it well we need to know that year there is a right angle triangle now this triangle has two sides one is a B next is BC both of them are of same height that is s which we can call it as the plate thickness now from B I will draw a perpendicular line on this hypotenuse AC this hypotenuse where it meets diapered aeneas this perpendicular I will call it as M next angle B a.m. that will be equal to 45 degree now this distance BM is called as throat thickness I will write down BM it is called as throat thickness and throat thickness is the minimum thickness I will write down that it is minimum thickness in the world so when we have this minimum thickness and this thickness would be carrying on up to the entire length length of weld is L so I will be getting an area now this is the area on which welding is done where I will see that this is T throat thickness and here we have length of weld so this is the minimum area now remember that either we talk about welded joint or we’ll talk about any object it will always fail at the minimum area in a welded joint minimum area will be at the throat because at throat the thickness is minimum so therefore minimum area at the throat that will be a is equal to T into L now how to get T here if we can see in this triangle a MB which I can draw it here in an enlarged way this is a MB now this BM indicates the throat thickness T a B indicates the thickness of plate which is s this angle is 45 degree so from this I can say that since sine 45 degree is equal to opposite upon hypotenuse opposite is T iPod anuses s so therefore T is equal to sine 45 into s so finally t will be sine 45 is point seven zero seven into s so we can put this value of T to get the minimum area so I will say that therefore minimum area of weld capital A that will be equal to t which is 0.7 0.7 0 7 s multiplied by the length of weld L now after getting this minimum area I can say that therefore the tensile strength because transverse fill it when it is subjected to tensile load so tensile strength of transverse fill it weld it will be given by P is equal to area multiplied by tensile stress so therefore P will be equal to area is 0.7 0 7 s multiplied by L into Sigma T this I will keep it as equation number 1 now your I will say that in equation number 1 equation 1 gives the strength or load carrying capacity of single transverse fill it weld now suppose we have another fill it will at the bottom like I can mark it here that here there is another fill it well so I’ll say that after this for double transpose fill it wait area will be twice of throat thickness multiplied by L that is a previous area which we were getting as T into L here since we will be using to fill it transverse fill it well so area is 2 into T into L so this will be 2 into T is 0.7 0 7 s multiplied by L so hence area will be 1 point 4 1 4 s into L this is the area which we will get for double transverse fill it will after this we can say that there for strength or load carrying capacity of double transfers fill it weld that load carrying capacity will be denoted by P and again this will be Sigma T into a that is tensile stress into area because transverse phillyd field they are subjected to tensile load so therefore P is equal to area first I will write down one point four one four into s multiplied by L into Sigma T this I will keep it as equation number two so therefore from equation number two strength of double transverse fill it well can be found out so you’re in this video we have seen how to know calculate or how to derive the formula of strength of transverse fill it way we had started it from a diagram we had seen what is meant by throat thickness which is the minimum thickness then minimum area which is throat thickness into L so after getting this area we had even converted the value of T in the form of s so T was 0.7 ZZ 0 7 s with the help of this diagram it was explained then finally we were getting minimum area of well then tensile strength of transverse fill it well which was single so here in equation 1 we were getting the strength equation for load carrying capacity of single transverse fill it will and similarly we had gone on to deriving the area and the formula for double transverse pellet weld so in this video we have seen how to get the strength of transverse fill it went

27 comments

  • Ravikant Sharma

    dear sir! transverse fillet weld fails due shear not from tension

    Reply
  • karan Khanna

    sir,how could u take angle as 45 degrees if u say that failure is due to tension…..if it's 45 degree,failure will be due to pure shear only

    Reply
  • Yogender Singh

    due to shear stress, transverse fillet weld can fail,not due to tensile stress.pls correct it otherwise many students can confuse

    Reply
  • Ashutosh Joshi

    video unnecessarily made longer…

    Reply
  • Patel kishan

    best video ever

    Reply
  • milantm24

    sir please explain me, about load caring capacity for L shaped plate and Filled weld ……….

    Reply
  • Anurag Sahu

    Awesome sir ,😣😍😍😍😍😍😘😘😘😘

    Reply
  • Biju Kumbang

    sir plz upload a problem of welded joints in tension members having given the angle sections and the stresses

    Reply
  • Ganesh Shetti

    how to calculate the flare bevel groove weld load carrying capacity. Round Bar (Rebar) and Plate. Rebar used as cart wheel spokes

    Reply
  • joselyn agoncillo

    My experience is a bit different. The weld that I put as a fillet eats into the metal parts and not only put something on top like your illustration. This means the weld must be shown having eaten into the metal parts.
    My next experience is that after welding, it is super hot. When the parts cool down, the upper right part rises because of the pull of the weld when it cools down. The pressure P therefore is not going to the right or left respective to the parts, but rather, the parts are pulled towards the weld as it cools.
    The whole explanation, therefore, does not make any sense at all.

    Reply
  • pawan kumar

    thanks sr

    Reply
  • Pitágoras Ramos

    Godtei muito!!!!!

    Reply
  • TumA

    You are so skilled! keep up the good work

    Reply
  • Katimore Inc

    What does Sigma T stands for?

    Reply
  • P.Tharun Kumar Achari

    Very well said sir
    It is easily understanding
    Tnqqq

    Reply
  • Pravallika 146

    Tq sir

    Reply
  • Benjamin McMahon

    You forgetting about the welder. And the field conditions. Are they welding on a leaking steam pipe. Where it's a 150 degrees. Looking in a mirror. 3 inch off the floor.

    Reply
  • mohanasundaram krishnakaran

    useful lecture

    Reply
  • SUJIT PRAJAPATI

    awesome carry on.. goodjob

    Reply
  • Subham Saha

    Why I add 12.5???? &
    If 12.5 is not given in data then how I get it????
    Please reply. …

    Reply
  • kartikeya sharma

    This guy picks only fuckin easy topics… To explain… 😠😠😠

    Reply
  • Darshan Sharma

    Completely wrong video please do not confused students don't be a greedy educator don't make YouTube videos just to earn some money quality of knowledge also matters. This video can kill dream of many students if they got miss guide

    Reply
  • SARBESWAR DAS

    Sir, in case of tensile stress,the line of action of load is perpendicular to the cross sectional area.but here the area associated with the throat upon which we calculated the tensile strength isn't Perpendicular to the force…so how can you explain this?

    Reply
  • SARBESWAR DAS

    Sir, in case of tensile stress,the line of action of load is perpendicular to the cross sectional area.but here the area associated with the throat upon which we calculated the tensile strength isn't Perpendicular to the force…so how can you explain this?

    Reply
  • Muralidaran M

    sir,
    How to calculate carrying capacity of tack welding.
    Regards,
    Muralidaran M

    Reply
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  • GYANI ANIRUDHA

    Define please IS2062E250BR

    Reply

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