I too have the dreaded right hinge issue on my son's laptop.  As the laptop was 3 years old when the problem developed and I saw Dell disavowed any design issue in the many failures online (see links below) I ordered the replacement lower case online.  I called and asked Dell to cover the installation labor only as I wasn't sure I wished to attempt it on my own.    I got bumped to a manager who gave me the party line;  not a design flaw... user wear and tear... off 1 year warranty.   So disappointing when a company doesn't realize people vote with their feet and won't own up to issues that are their responsibility!  In my job I have ordered 100's of dells.  Never felt they weren't straight up or reasonable about warranty issues in the past.  

These hinges are not being misused; the tightness of the hinges and screws without loctite are causing the issues.   Dell has lost a customer for life for not meeting me half way!   

https://www.dell.com/community/Laptops-General-Read-Only/Inspiron-5547-right-hinge-damage/m-p/5020073#M894674    

https://www.dell.com/community/Laptops-General-Read-Only/Dell-Inspiron-15-5547-right-side-hinge-issues/td-p/5108460

https://www.dell.com/community/Laptops-General-Read-Only/Dell-s-hinge-policy-regarding-Inspiron-15-7000-series/td-p/5144121

https://www.dell.com/community/Laptops-General-Read-Only/Dell-Inspiron-15-5000-Series-Broken-Hinge/td-p/4783141

https://www.dell.com/community/Laptops-General-Read-Only/Inspiron-5547-laptop-pops-open-at-the-right-side-joint-while/m-p/4557534